diff --git a/examples/utest/configs/kernel/ipc.conf b/examples/utest/configs/kernel/ipc.conf
index 543ebf9e4c..f8e687e633 100644
--- a/examples/utest/configs/kernel/ipc.conf
+++ b/examples/utest/configs/kernel/ipc.conf
@@ -1,7 +1,9 @@
 CONFIG_UTEST_SEMAPHORE_TC=y
 CONFIG_UTEST_EVENT_TC=y
 CONFIG_UTEST_MESSAGEQUEUE_TC=y
+CONFIG_UTEST_SIGNAL_TC=y
 # dependencies
 CONFIG_RT_USING_SEMAPHORE=y
 CONFIG_RT_USING_EVENT=y
 CONFIG_RT_USING_MESSAGEQUEUE=y
+CONFIG_RT_USING_SIGNALS=y
diff --git a/examples/utest/testcases/kernel/Kconfig b/examples/utest/testcases/kernel/Kconfig
index 0145d81373..f4673aebb9 100644
--- a/examples/utest/testcases/kernel/Kconfig
+++ b/examples/utest/testcases/kernel/Kconfig
@@ -27,4 +27,8 @@ config UTEST_MESSAGEQUEUE_TC
     bool "message queue test"
     default n
 
+config UTEST_SIGNAL_TC
+    bool "signal test"
+    default n
+
 endmenu
diff --git a/examples/utest/testcases/kernel/SConscript b/examples/utest/testcases/kernel/SConscript
index 6192bea3b0..ca34db6fed 100644
--- a/examples/utest/testcases/kernel/SConscript
+++ b/examples/utest/testcases/kernel/SConscript
@@ -23,6 +23,9 @@ if GetDepend(['UTEST_TIMER_TC']):
 if GetDepend(['UTEST_MESSAGEQUEUE_TC']):
     src += ['messagequeue_tc.c']
 
+if GetDepend(['UTEST_SIGNAL_TC']):
+    src += ['signal_tc.c']
+
 CPPPATH = [cwd]
 
 group = DefineGroup('utestcases', src, depend = [], CPPPATH = CPPPATH)
diff --git a/examples/utest/testcases/kernel/signal_tc.c b/examples/utest/testcases/kernel/signal_tc.c
new file mode 100644
index 0000000000..40c08f7402
--- /dev/null
+++ b/examples/utest/testcases/kernel/signal_tc.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-08-12     flybreak     the first version
+ *
+ * case 1:rt_signal_install, install all available signal
+ * case 2:rt_signal_install, install illegal signal
+ * case 3:rt_signal_mask/unmask, one thread self, install and unmask, then kill, should received.
+ * case 4:rt_signal_mask/unmask, one thread self, install and unmask and mask, then kill, should can't received.
+ * case 5:rt_signal_wait, two thread, thread1: install and unmask, then wait 1s; thread2: kill, should received.
+ * case 6:rt_signal_wait, two thread, thread1: install and unmask, then wait 1s; thread2: sleep 2s then kill, should can't received.
+ * case 7:rt_signal_kill, kill legal thread, return 0;
+ * case 8:rt_signal_kill, kill illegal thread, return failed (unused);
+ * case 9:rt_signal_kill, kill illegal signo, return -RT_EINVAL;
+ *
+ */
+
+#include <rtthread.h>
+#include "utest.h"
+
+int recive_sig = 0;
+
+void sig_handle_default(int signo)
+{
+    recive_sig = signo;
+}
+
+static void rt_signal_install_test(void)
+{
+    int signo;
+    rt_sighandler_t result;
+
+    /* case 1:rt_signal_install, install all available signal. */
+    for (signo = 0; signo < RT_SIG_MAX; signo++)
+    {
+        result = rt_signal_install(signo, sig_handle_default);
+        uassert_true(result != SIG_ERR);
+    }
+    /* case 2:rt_signal_install, install illegal signal. */
+    result = rt_signal_install(signo, sig_handle_default);
+    uassert_true(result == SIG_ERR);
+
+    return;
+}
+
+static void rt_signal_mask_test(void)
+{
+    int signo;
+    rt_sighandler_t result;
+
+    /* case 3:rt_signal_mask/unmask, one thread self, install and unmask, then kill, should received. */
+    for (signo = 0; signo < RT_SIG_MAX; signo++)
+    {
+        recive_sig = -1;
+        result = rt_signal_install(signo, sig_handle_default);
+        uassert_true(result != SIG_ERR);
+        rt_signal_unmask(signo);
+        uassert_int_equal(rt_thread_kill(rt_thread_self(), signo), RT_EOK);
+        rt_thread_mdelay(1);
+        uassert_int_equal(recive_sig, signo);
+    }
+
+    return;
+}
+
+static void rt_signal_unmask_test(void)
+{
+    int signo;
+    rt_sighandler_t result;
+
+    /* case 4:rt_signal_mask/unmask, one thread self, install and unmask and mask, then kill, should can't received. */
+    for (signo = 0; signo < RT_SIG_MAX; signo++)
+    {
+        recive_sig = -1;
+        result = rt_signal_install(signo, sig_handle_default);
+        uassert_true(result != SIG_ERR);
+        rt_signal_unmask(signo);
+        rt_signal_mask(signo);
+        uassert_int_equal(rt_thread_kill(rt_thread_self(), signo), RT_EOK);
+        rt_thread_mdelay(1);
+        uassert_int_not_equal(recive_sig, signo);
+    }
+
+    return;
+}
+
+static void rt_signal_kill_test(void)
+{
+    int signo;
+    rt_sighandler_t result;
+
+    /* case 7:rt_signal_kill, kill legal thread, return 0; */
+    for (signo = 0; signo < RT_SIG_MAX; signo++)
+    {
+        recive_sig = -1;
+        result = rt_signal_install(signo, sig_handle_default);
+        uassert_true(result != SIG_ERR);
+        rt_signal_unmask(signo);
+        uassert_int_equal(rt_thread_kill(rt_thread_self(), signo), RT_EOK);
+        rt_thread_mdelay(1);
+        uassert_int_equal(recive_sig, signo);
+    }
+    /* case 8:rt_signal_kill, kill illegal thread, return failed; */
+//    uassert_true(rt_thread_kill((rt_thread_t)-1, signo) == -RT_ERROR);
+
+    /* case 9:rt_signal_kill, kill illegal signo, return -RT_EINVAL; */
+    uassert_true(rt_thread_kill(rt_thread_self(), -1) == -RT_EINVAL);
+
+    return;
+}
+
+void rt_signal_wait_thread(void *parm)
+{
+    sigset_t selectset;
+    siginfo_t recive_si;
+
+    rt_signal_install(SIGUSR1, sig_handle_default);
+    rt_signal_unmask(SIGUSR1);
+
+    sigemptyset(&selectset);
+    sigaddset(&selectset, SIGUSR1);
+
+    /* case 5:rt_signal_wait, two thread, thread1: install and unmask, then wait 1s; thread2: kill, should received. */
+    if (rt_signal_wait(&selectset, &recive_si, RT_TICK_PER_SECOND) != RT_EOK)
+    {
+        return;
+    }
+
+    recive_sig = recive_si.si_signo;
+}
+
+static void rt_signal_wait_test(void)
+{
+    rt_thread_t t1;
+
+    recive_sig = -1;
+    t1 = rt_thread_create("sig_t1", rt_signal_wait_thread, 0, 4096, 14, 10);
+    if (t1)
+    {
+        rt_thread_startup(t1);
+    }
+
+    rt_thread_mdelay(1);
+    /* case 5:rt_signal_wait, two thread, thread1: install and unmask, then wait 1s; thread2: kill, should received. */
+    uassert_int_equal(rt_thread_kill(t1, SIGUSR1), RT_EOK);
+    rt_thread_mdelay(1);
+    uassert_int_equal(recive_sig, SIGUSR1);
+
+    return;
+}
+
+static void rt_signal_wait_test2(void)
+{
+    rt_thread_t t1;
+
+    recive_sig = -1;
+    t1 = rt_thread_create("sig_t1", rt_signal_wait_thread, 0, 4096, 14, 10);
+    if (t1)
+    {
+        rt_thread_startup(t1);
+    }
+
+    /* case 6:rt_signal_wait, two thread, thread1: install and unmask, then wait 1s; thread2: sleep 2s then kill, should can't received. */
+    rt_thread_mdelay(2000);
+    uassert_int_equal(rt_thread_kill(t1, SIGUSR1), RT_EOK);
+    rt_thread_mdelay(1);
+    uassert_int_not_equal(recive_sig, SIGUSR1);
+
+    return;
+}
+
+static rt_err_t utest_tc_init(void)
+{
+    return RT_EOK;
+}
+
+static rt_err_t utest_tc_cleanup(void)
+{
+    return RT_EOK;
+}
+
+static void testcase(void)
+{
+#ifdef RT_USING_HEAP
+    UTEST_UNIT_RUN(rt_signal_install_test);
+    UTEST_UNIT_RUN(rt_signal_mask_test);
+    UTEST_UNIT_RUN(rt_signal_unmask_test);
+    UTEST_UNIT_RUN(rt_signal_kill_test);
+    UTEST_UNIT_RUN(rt_signal_wait_test);
+    UTEST_UNIT_RUN(rt_signal_wait_test2);
+#endif /* RT_USING_HEAP */
+}
+UTEST_TC_EXPORT(testcase, "testcases.kernel.signal_tc", utest_tc_init, utest_tc_cleanup, 1000);
+
+/*********************** end of file ****************************/