diff --git a/api-test/backend/src/main/java/io/metersphere/api/jmeter/NewDriverManager.java b/api-test/backend/src/main/java/io/metersphere/api/jmeter/NewDriverManager.java
index ba346bc4cc..5200c35ffe 100644
--- a/api-test/backend/src/main/java/io/metersphere/api/jmeter/NewDriverManager.java
+++ b/api-test/backend/src/main/java/io/metersphere/api/jmeter/NewDriverManager.java
@@ -11,6 +11,7 @@ import io.metersphere.commons.utils.ApiFileUtil;
 import io.metersphere.commons.utils.CommonBeanFactory;
 import io.metersphere.dto.FileInfoDTO;
 import io.metersphere.dto.ProjectJarConfig;
+import io.metersphere.jmeter.ProjectClassLoader;
 import io.metersphere.metadata.service.FileMetadataService;
 import io.metersphere.utils.JarConfigUtils;
 import io.metersphere.vo.BooleanPool;
@@ -57,9 +58,12 @@ public class NewDriverManager {
             Map<String, List<ProjectJarConfig>> map = JarConfigUtils.getJarConfigs(projectIds, jarConfigMap);
             if (MapUtils.isNotEmpty(map)) {
                 //获取文件内容
+                List<String> loaderProjectIds = new ArrayList<>();
+
                 FileMetadataService fileMetadataService = CommonBeanFactory.getBean(FileMetadataService.class);
                 map.forEach((key, value) -> {
                     if (CollectionUtils.isNotEmpty(value)) {
+                        loaderProjectIds.add(key);
                         //历史数据
                         value.stream().distinct().filter(s -> s.isHasFile()).forEach(s -> {
                             //获取文件内容
@@ -81,6 +85,9 @@ public class NewDriverManager {
                         }
                     }
                 });
+
+                // 初始化类加载器
+                ProjectClassLoader.initClassLoader(loaderProjectIds);
             }
         }
         return jarConfigMap;
diff --git a/api-test/backend/src/main/java/io/metersphere/listener/ApiAppStartListener.java b/api-test/backend/src/main/java/io/metersphere/listener/ApiAppStartListener.java
index c6dd4fba8b..da7d2f9612 100644
--- a/api-test/backend/src/main/java/io/metersphere/listener/ApiAppStartListener.java
+++ b/api-test/backend/src/main/java/io/metersphere/listener/ApiAppStartListener.java
@@ -7,6 +7,7 @@ import io.metersphere.commons.constants.ScheduleGroup;
 import io.metersphere.commons.utils.CommonBeanFactory;
 import io.metersphere.commons.utils.LogUtil;
 import io.metersphere.dto.BaseSystemConfigDTO;
+import io.metersphere.jmeter.ProjectClassLoader;
 import io.metersphere.service.*;
 import io.metersphere.service.definition.ApiModuleService;
 import io.metersphere.service.scenario.ApiScenarioModuleService;
@@ -95,6 +96,8 @@ public class ApiAppStartListener implements ApplicationRunner {
         scheduleService.startEnableSchedules(ScheduleGroup.API_SCENARIO_TEST);
         scheduleService.startEnableSchedules(ScheduleGroup.SWAGGER_IMPORT);
         LogUtil.info("Startup complete");
+
+        ProjectClassLoader.initClassLoader();
     }
 
 
diff --git a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/JoinClassLoader.java b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/JoinClassLoader.java
new file mode 100644
index 0000000000..0d7cb832ec
--- /dev/null
+++ b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/JoinClassLoader.java
@@ -0,0 +1,95 @@
+package io.metersphere.jmeter;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.nio.ByteBuffer;
+import java.util.Enumeration;
+import java.util.Vector;
+
+/**
+ * A class loader that combines multiple class loaders into one.<br>
+ * The classes loaded by this class loader are associated with this class loader,
+ * i.e. Class.getClassLoader() points to this class loader.
+ */
+public class JoinClassLoader extends ClassLoader {
+
+    private ClassLoader[] delegateClassLoaders;
+
+    public JoinClassLoader(ClassLoader parent, ClassLoader... delegateClassLoaders) {
+        super(parent);
+        this.delegateClassLoaders = delegateClassLoaders;
+    }
+
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        // It would be easier to call the loadClass() methods of the delegateClassLoaders
+        // here, but we have to load the class from the byte code ourselves, because we
+        // need it to be associated with our class loader.
+        String path = name.replace('.', '/') + ".class";
+        URL url = findResource(path);
+        if (url == null) {
+            throw new ClassNotFoundException(name);
+        }
+        ByteBuffer byteCode;
+        try {
+            byteCode = loadResource(url);
+        } catch (IOException e) {
+            throw new ClassNotFoundException(name, e);
+        }
+        return defineClass(name, byteCode, null);
+    }
+
+    private ByteBuffer loadResource(URL url) throws IOException {
+        InputStream stream = null;
+        try {
+            stream = url.openStream();
+            int initialBufferCapacity = Math.min(0x40000, stream.available() + 1);
+            if (initialBufferCapacity <= 2) {
+                initialBufferCapacity = 0x10000;
+            } else {
+                initialBufferCapacity = Math.max(initialBufferCapacity, 0x200);
+            }
+            ByteBuffer buf = ByteBuffer.allocate(initialBufferCapacity);
+            while (true) {
+                if (!buf.hasRemaining()) {
+                    ByteBuffer newBuf = ByteBuffer.allocate(2 * buf.capacity());
+                    buf.flip();
+                    newBuf.put(buf);
+                    buf = newBuf;
+                }
+                int len = stream.read(buf.array(), buf.position(), buf.remaining());
+                if (len <= 0) {
+                    break;
+                }
+                buf.position(buf.position() + len);
+            }
+            buf.flip();
+            return buf;
+        } finally {
+            if (stream != null) {
+                stream.close();
+            }
+        }
+    }
+
+    protected URL findResource(String name) {
+        for (ClassLoader delegate : delegateClassLoaders) {
+            URL resource = delegate.getResource(name);
+            if (resource != null) {
+                return resource;
+            }
+        }
+        return null;
+    }
+
+    protected Enumeration<URL> findResources(String name) throws IOException {
+        Vector<URL> vector = new Vector<URL>();
+        for (ClassLoader delegate : delegateClassLoaders) {
+            Enumeration<URL> enumeration = delegate.getResources(name);
+            while (enumeration.hasMoreElements()) {
+                vector.add(enumeration.nextElement());
+            }
+        }
+        return vector.elements();
+    }
+}
diff --git a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/ProjectClassLoader.java b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/ProjectClassLoader.java
new file mode 100644
index 0000000000..8335186983
--- /dev/null
+++ b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/jmeter/ProjectClassLoader.java
@@ -0,0 +1,57 @@
+package io.metersphere.jmeter;
+
+import groovy.lang.GroovyClassLoader;
+import io.metersphere.utils.JarConfigUtils;
+import io.metersphere.utils.JsonUtils;
+import io.metersphere.utils.LocalPathUtil;
+import io.metersphere.utils.LoggerUtil;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class ProjectClassLoader {
+    // 记录以项目为单位的自定义JAR的类加载器
+    private final static Map<String, GroovyClassLoader> classLoaderMap = new ConcurrentHashMap<>();
+
+    public static void initClassLoader(List<String> projectIds) {
+        // 读取所有JAR路径
+        for (String projectId : projectIds) {
+            List<String> jarPaths = JarConfigUtils.walk(LocalPathUtil.prePath + File.separator + projectId);
+            if (CollectionUtils.isNotEmpty(jarPaths)) {
+                LoggerUtil.info("加载JAR-PATH:" + JsonUtils.toJSONString(jarPaths), projectId);
+                // 初始化类加载器
+                GroovyClassLoader loader = MsClassLoader.getDynamic(jarPaths);
+                classLoaderMap.put(projectId, loader);
+            }
+        }
+    }
+
+    public static ClassLoader getClassLoader(List<String> projectIds) {
+        GroovyClassLoader classLoader = new GroovyClassLoader();
+        List<GroovyClassLoader> classLoaders = new ArrayList<>();
+        for (String projectId : projectIds) {
+            if (classLoaderMap.containsKey(projectId)) {
+                classLoaders.add(classLoaderMap.get(projectId));
+            }
+        }
+        // 单项目加载器
+        if (classLoaders.size() == 1) {
+            return classLoaders.get(0);
+        }
+        // 跨项目加载器
+        return new JoinClassLoader(classLoader, classLoaders.toArray(new ClassLoader[classLoaders.size()]));
+    }
+
+    public static void initClassLoader() {
+        // 读取所有JAR路径
+        List<String> projectIds = JarConfigUtils.getFileNames(LocalPathUtil.prePath + File.separator);
+        LoggerUtil.info("初始化所有JAR：" + JsonUtils.toJSONString(projectIds));
+        if (CollectionUtils.isNotEmpty(projectIds)) {
+            initClassLoader(projectIds);
+        }
+    }
+}
diff --git a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/CustomizeFunctionUtil.java b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/CustomizeFunctionUtil.java
index 69d18bfab0..18a2afa71b 100644
--- a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/CustomizeFunctionUtil.java
+++ b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/CustomizeFunctionUtil.java
@@ -1,7 +1,6 @@
 package io.metersphere.utils;
 
-import groovy.lang.GroovyClassLoader;
-import io.metersphere.jmeter.MsClassLoader;
+import io.metersphere.jmeter.ProjectClassLoader;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.collections4.MapUtils;
 import org.apache.commons.lang3.ObjectUtils;
@@ -30,11 +29,18 @@ public class CustomizeFunctionUtil {
             String pathStr = testPlan.getPropertyAsString(JAR_PATH);
             JMeterContext context = JMeterContextService.getContext();
             if (StringUtils.isNotEmpty(pathStr) && context != null) {
-                List<String> jarPaths = JsonUtils.parseObject(pathStr, List.class);
-                LoggerUtil.info(testPlan.getName() + "加载JAR:", jarPaths);
-                if (CollectionUtils.isNotEmpty(jarPaths)) {
+                List<String> projectIds = JsonUtils.parseObject(pathStr, List.class);
+                LoggerUtil.info("加载JAR-PROJECT-ID:" + projectIds, testPlan.getName());
+                LoggerUtil.info("PRE-PATH:" + LocalPathUtil.prePath, testPlan.getName());
+                if (CollectionUtils.isNotEmpty(projectIds)) {
+                    // 读取所有JAR路径
+                    List<String> jarPaths = JarConfigUtils.findPathByProjectIds(projectIds);
+                    LoggerUtil.info("加载JAR-PATH:" + JsonUtils.toJSONString(jarPaths), testPlan.getName());
+                    if (CollectionUtils.isEmpty(jarPaths)) {
+                        return;
+                    }
                     // 初始化类加载器
-                    GroovyClassLoader loader = MsClassLoader.getDynamic(jarPaths);
+                    ClassLoader loader = ProjectClassLoader.getClassLoader(projectIds);
                     if (loader == null) {
                         return;
                     }
diff --git a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/JarConfigUtils.java b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/JarConfigUtils.java
index 6ccbdc025c..830525a749 100644
--- a/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/JarConfigUtils.java
+++ b/framework/sdk-parent/jmeter/src/main/java/io/metersphere/utils/JarConfigUtils.java
@@ -6,11 +6,16 @@ import org.apache.commons.lang3.StringUtils;
 import org.aspectj.util.FileUtil;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class JarConfigUtils {
 
@@ -99,4 +104,24 @@ public class JarConfigUtils {
             file.delete();
         }
     }
+
+    public static List<String> findPathByProjectIds(List<String> projectIds) {
+        List<String> jarPaths = new ArrayList<>();
+        if (CollectionUtils.isNotEmpty(projectIds)) {
+            projectIds.forEach(item -> {
+                jarPaths.addAll(walk(LocalPathUtil.prePath + File.separator + item));
+            });
+        }
+        return jarPaths;
+    }
+
+
+    public static List<String> walk(String dirName) {
+        try (Stream<Path> paths = Files.walk(Paths.get(dirName), 2)) {
+            return paths.map(path -> path.toString()).filter(f -> f.endsWith(".jar")).collect(Collectors.toList());
+        } catch (IOException e) {
+            LoggerUtil.error("读取文件路径异常：", e);
+        }
+        return new ArrayList<>();
+    }
 }
diff --git a/framework/sdk-parent/jmeter/src/main/java/org/apache/jmeter/util/JSR223TestElement.java b/framework/sdk-parent/jmeter/src/main/java/org/apache/jmeter/util/JSR223TestElement.java
index d281d8f2c8..15e509a6b8 100644
--- a/framework/sdk-parent/jmeter/src/main/java/org/apache/jmeter/util/JSR223TestElement.java
+++ b/framework/sdk-parent/jmeter/src/main/java/org/apache/jmeter/util/JSR223TestElement.java
@@ -168,10 +168,11 @@ public abstract class JSR223TestElement extends ScriptingTestElement
         // 设置自定义类加载器
         Object dynamicClassLoader = JMeterContextService.getContext().getVariables().getObject(CustomizeFunctionUtil.MS_CLASS_LOADER);
         if (dynamicClassLoader != null) {
-            GroovyClassLoader classLoader = (GroovyClassLoader) dynamicClassLoader;
+            ClassLoader classLoader = (ClassLoader) dynamicClassLoader;
             if (scriptEngine instanceof GroovyScriptEngineImpl) {
+                GroovyClassLoader groovyClassLoader = new GroovyClassLoader(classLoader);
                 GroovyScriptEngineImpl groovyScriptEngine = (GroovyScriptEngineImpl) scriptEngine;
-                groovyScriptEngine.setClassLoader(classLoader);
+                groovyScriptEngine.setClassLoader(groovyClassLoader);
             } else {
                 Thread.currentThread().setContextClassLoader(classLoader);
             }