diff --git a/syscall/fs_syscall.c b/syscall/fs_syscall.c
index 94e42e10..c7a3b02f 100644
--- a/syscall/fs_syscall.c
+++ b/syscall/fs_syscall.c
@@ -2435,4 +2435,39 @@ int SysFstatfs64(int fd, size_t sz, struct statfs *buf)
 
     return ret;
 }
+
+int SysPpoll(struct pollfd *fds, nfds_t nfds, const struct timespec *tmo_p, const sigset_t *sigMask, int nsig)
+{
+    int timeout;
+    int ret;
+    sigset_t_l origMask;
+    sigset_t_l setl;
+
+    if (sigMask == NULL) {
+        ret = -EINVAL;
+        return ret;
+    }
+
+    CHECK_ASPACE(tmo_p, sizeof(struct timespec));
+    CHECK_ASPACE(sigMask, sizeof(sigset_t));
+    CPY_FROM_USER(tmo_p);
+    CPY_FROM_USER(sigMask);
+
+    timeout = (tmo_p == NULL) ? -1 : (tmo_p->tv_sec * OS_SYS_US_PER_MS + tmo_p->tv_nsec / OS_SYS_NS_PER_MS);
+    if (timeout & 0x80000000) {
+        ret = -EINVAL;
+	return ret;
+    }
+    setl.sig[0] = *sigMask;
+    OsSigprocMask(SIG_SETMASK, &setl, &origMask);
+    ret = SysPoll(fds, nfds, timeout);
+    if (ret < 0) {
+        ret = -get_errno();
+    }
+    OsSigprocMask(SIG_SETMASK, &origMask, NULL);
+
+    PointerFree(tmo_pbak);
+    PointerFree(sigMaskbak);
+    return (ret == -1) ? -get_errno() : ret;
+}
 #endif
diff --git a/syscall/los_syscall.h b/syscall/los_syscall.h
index 51abfde2..7507bbee 100644
--- a/syscall/los_syscall.h
+++ b/syscall/los_syscall.h
@@ -275,6 +275,8 @@ extern int SysFstat64(int fd, struct stat64 *buf);
 extern int SysFstatat64(int fd, const char *restrict path, struct stat *restrict buf, int flag);
 extern int SysFcntl64(int fd, int cmd, void *arg);
 extern int SysPoll(struct pollfd *fds, nfds_t nfds, int timeout);
+extern int SysPpoll(struct pollfd *fds, nfds_t nfds, const struct timespec *tmo_p,
+		                    const sigset_t *sigmask, int nsig);
 extern int SysPrctl(int option, ...);
 extern ssize_t SysPread64(int fd, void *buf, size_t nbytes, off64_t offset);
 extern ssize_t SysPwrite64(int fd, const void *buf, size_t nbytes, off64_t offset);
diff --git a/syscall/syscall_lookup.h b/syscall/syscall_lookup.h
index d2181aa8..c8d15a90 100644
--- a/syscall/syscall_lookup.h
+++ b/syscall/syscall_lookup.h
@@ -85,6 +85,7 @@ SYSCALL_HAND_DEF(__NR__newselect, SysSelect, int, ARG_NUM_5)
 SYSCALL_HAND_DEF(__NR_readv, SysReadv, ssize_t, ARG_NUM_3)
 SYSCALL_HAND_DEF(__NR_writev, SysWritev, ssize_t, ARG_NUM_3)
 SYSCALL_HAND_DEF(__NR_poll, SysPoll, int, ARG_NUM_3)
+SYSCALL_HAND_DEF(__NR_ppoll, SysPpoll, int, ARG_NUM_5)
 SYSCALL_HAND_DEF(__NR_prctl, SysPrctl, int, ARG_NUM_7)
 SYSCALL_HAND_DEF(__NR_pread64, SysPread64, ssize_t, ARG_NUM_7)
 SYSCALL_HAND_DEF(__NR_pwrite64, SysPwrite64, ssize_t, ARG_NUM_7)
@@ -258,4 +259,4 @@ SYSCALL_HAND_DEF(__NR_creat_user_thread, SysCreateUserThread, unsigned int, ARG_
 SYSCALL_HAND_DEF(__NR_getrusage, SysGetrusage, int, ARG_NUM_2)
 SYSCALL_HAND_DEF(__NR_sysconf, SysSysconf, long, ARG_NUM_1)
 SYSCALL_HAND_DEF(__NR_ugetrlimit, SysUgetrlimit, int, ARG_NUM_2)
-SYSCALL_HAND_DEF(__NR_setrlimit, SysSetrlimit, int, ARG_NUM_2)
\ No newline at end of file
+SYSCALL_HAND_DEF(__NR_setrlimit, SysSetrlimit, int, ARG_NUM_2)
diff --git a/testsuites/unittest/IO/BUILD.gn b/testsuites/unittest/IO/BUILD.gn
index eb2e555e..e9095106 100644
--- a/testsuites/unittest/IO/BUILD.gn
+++ b/testsuites/unittest/IO/BUILD.gn
@@ -83,6 +83,8 @@ sources_full = [
   "full/IO_test_gettext_001.cpp",
   "full/IO_test_strncasecmp_l_001.cpp",
   "full/IO_test_strncasecmp_l_002.cpp",
+  "full/IO_test_ppoll_001.cpp",
+  "full/IO_test_ppoll_002.cpp",
 ]
 
 if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_LOW) {
diff --git a/testsuites/unittest/IO/It_test_IO.h b/testsuites/unittest/IO/It_test_IO.h
index 4e582afe..c64683df 100644
--- a/testsuites/unittest/IO/It_test_IO.h
+++ b/testsuites/unittest/IO/It_test_IO.h
@@ -132,6 +132,7 @@ extern VOID IO_TEST_PPOLL_002(void);
 extern VOID IO_TEST_PSELECT_001(void);
 extern VOID IO_TEST_STRFMON_L_001(VOID);
 extern VOID IO_TEST_STRFMON_L_002(VOID);
-
+extern VOID IO_TEST_PPOLL_001(VOID);
+extern VOID IO_TEST_PPOLL_002(VOID);
 
 #endif
diff --git a/testsuites/unittest/IO/full/IO_test_ppoll_001.cpp b/testsuites/unittest/IO/full/IO_test_ppoll_001.cpp
index 9fe63c98..66d6c06d 100644
--- a/testsuites/unittest/IO/full/IO_test_ppoll_001.cpp
+++ b/testsuites/unittest/IO/full/IO_test_ppoll_001.cpp
@@ -47,16 +47,16 @@ static void *pthread_01(void)
     int total_num = 0;
     int times = 3;
     int i, ret;
-    struct pollfd fds[LISTEN_FD_NUM] = {0};
+    struct pollfd fds[LISTEN_FD_NUM] = { 0 };
     char buffer[20];
     struct timespec t = { 3,0 };
     sigset_t sigset;
 
-    TEST_PRINT("[INFO]%s:%d,%s,Create thread %d\n", __FILE__, __LINE__, __func__, count); 
+    /* TEST_PRINT("[INFO]%s:%d,%s,Create thread %d\n", __FILE__, __LINE__, __func__, count); */
     count++;
 
     sigemptyset(&sigset);
-    sigaddset(&sigset, SIGALRM);    //把SIGALRM 信号添加到sigset 信号集中
+    sigaddset(&sigset, SIGALRM);    /* 把SIGALRM 信号添加到sigset 信号集中 */
     sigaddset(&sigset, SIGUSR1);
 
     for (i = 0; i < LISTEN_FD_NUM; i++) {
@@ -87,7 +87,7 @@ static void *pthread_01(void)
     }
 
     /* ICUNIT_GOTO_EQUAL(total_num, 10, -1, EXIT); */
-    TEST_PRINT("[INFO]%s:%d,%s,total_num=%d\n", __FILE__, __LINE__, __func__, total_num);
+    /* TEST_PRINT("[INFO]%s:%d,%s,total_num=%d\n", __FILE__, __LINE__, __func__, total_num); */
 EXIT:
     return nullptr;
 }
@@ -106,7 +106,7 @@ static UINT32 testcase1(VOID)
     }
 
     errno = 0;
-    ret = pthread_create(&g_tid, nullptr, pthread_01(nullptr), nullptr);
+    ret = pthread_create(&g_tid, nullptr, (void *(*)(void *))pthread_01, nullptr);
     TEST_PRINT("[INFO]%s:%d,%s,ret=%d,errno=%d,errstr=%s\n", __FILE__, __LINE__, __func__, ret, errno, strerror(errno));
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
 
@@ -127,7 +127,7 @@ static UINT32 testcase1(VOID)
         sleep(1);
         for (i = 0; i < LISTEN_FD_NUM; i++) {
             errno = 0;
-            ret = pthread_create(&g_tid, nullptr, pthread_01(nullptr), nullptr);
+            ret = pthread_create(&g_tid, nullptr, (void *(*)(void *))pthread_01, nullptr);
             TEST_PRINT("[INFO]%s:%d,%s,ret=%d,errno=%d,errstr=%s\n", __FILE__, __LINE__, __func__, ret, errno, strerror(errno));
             ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
 
diff --git a/testsuites/unittest/IO/io_test.cpp b/testsuites/unittest/IO/io_test.cpp
index 83bbf60d..1556beb4 100644
--- a/testsuites/unittest/IO/io_test.cpp
+++ b/testsuites/unittest/IO/io_test.cpp
@@ -93,6 +93,28 @@ HWTEST_F(IoTest, ItTestIo013, TestSize.Level0)
 #endif
 
 #if defined(LOSCFG_USER_TEST_FULL)
+/* *
+ * @tc.name: IO_TEST_PPOLL_001
+ * @tc.desc: function for IoTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(IoTest, IO_TEST_PPOLL_001, TestSize.Level0)
+{
+    IO_TEST_PPOLL_001();
+}
+
+/* *
+ * @tc.name: IO_TEST_PPOLL_002
+ * @tc.desc: function for IoTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(IoTest, IO_TEST_PPOLL_002, TestSize.Level0)
+{
+    IO_TEST_PPOLL_002();
+}
+
 /* *
  * @tc.name: IT_STDLIB_POLL_002
  * @tc.desc: function for IoTest