diff --git a/frameworks/libhilog/hilog_printf.cpp b/frameworks/libhilog/hilog_printf.cpp
index 1e92587d263630ecfb315d260ff5c1fccd74d7af..3e4d617eaaa04e73eeeccdb7e1dee61134820614 100644
--- a/frameworks/libhilog/hilog_printf.cpp
+++ b/frameworks/libhilog/hilog_printf.cpp
@@ -212,6 +212,15 @@ static int LogToKmsg(const LogLevel level, const char *tag, const char* info)
 #endif
 }
 
+bool HiLogIsPrivacyOn()
+{
+    bool priv = true;
+#if not (defined( __WINDOWS__ ) || defined( __MAC__ ) || defined( __LINUX__ ))
+    priv = (!IsDebugOn()) && IsPrivateSwitchOn();
+#endif
+    return priv;
+}
+
 int HiLogPrintArgs(const LogType type, const LogLevel level, const unsigned int domain, const char *tag,
     const char *fmt, va_list ap)
 {
@@ -224,7 +233,7 @@ int HiLogPrintArgs(const LogType type, const LogLevel level, const unsigned int
     if (type == LOG_KMSG) {
         char tmpFmt[MAX_LOG_LEN] = {0};
         // format va_list info to char*
-        if (vsnprintfp_s(tmpFmt, sizeof(tmpFmt), sizeof(tmpFmt) - 1, true, fmt, ap) == -1) {
+        if (vsnprintfp_s(tmpFmt, sizeof(tmpFmt), sizeof(tmpFmt) - 1, HiLogIsPrivacyOn(), fmt, ap) == -1) {
             tmpFmt[sizeof(tmpFmt) - 2] = '\n';  // 2 add \n to tail
             tmpFmt[sizeof(tmpFmt) - 1] = '\0';
         }
@@ -271,14 +280,7 @@ int HiLogPrintArgs(const LogType type, const LogLevel level, const unsigned int
         }
     }
 
-    /* format log string */
-#if not (defined( __WINDOWS__ ) || defined( __MAC__ ) || defined( __LINUX__ ))
-    bool debug = IsDebugOn();
-    bool priv = (!debug) && IsPrivateSwitchOn();
-#else
-    bool priv = true;
-#endif
-
+/* format log string */
 #ifdef __clang__
 /* code specific to clang compiler */
 #pragma clang diagnostic push
@@ -288,7 +290,7 @@ int HiLogPrintArgs(const LogType type, const LogLevel level, const unsigned int
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 #endif
-    vsnprintfp_s(logBuf, MAX_LOG_LEN - traceBufLen, MAX_LOG_LEN - traceBufLen - 1, priv, fmt, ap);
+    vsnprintfp_s(logBuf, MAX_LOG_LEN - traceBufLen, MAX_LOG_LEN - traceBufLen - 1, HiLogIsPrivacyOn(), fmt, ap);
     LogCallback logCallbackFunc = g_logCallback;
     if (logCallbackFunc != nullptr) {
         logCallbackFunc(type, level, domain, tag, logBuf);
@@ -334,7 +336,7 @@ int HiLogPrintArgs(const LogType type, const LogLevel level, const unsigned int
 
 #if not (defined( __WINDOWS__ ) || defined( __MAC__ ) || defined( __LINUX__ ))
     /* flow control */
-    if (!debug && IsNeedProcFlowCtr(type)) {
+    if (!IsDebugOn() && IsNeedProcFlowCtr(type)) {
         ret = HiLogFlowCtrlProcess(tagLen + logLen - traceBufLen, ts_mono);
         if (ret < 0) {
             return ret;
diff --git a/test/unittest/common/hilog_print_test.cpp b/test/unittest/common/hilog_print_test.cpp
index 542b322bdc1ea367c64783f124c6b5cdfc5b5b1a..bb9259e6f835a9eaceae748fd56cb5023425fbfd 100644
--- a/test/unittest/common/hilog_print_test.cpp
+++ b/test/unittest/common/hilog_print_test.cpp
@@ -24,6 +24,9 @@ using namespace OHOS::HiviewDFX;
 namespace {
 const HiLogLabel LABEL = { LOG_CORE, 0xD002D00, "HILOGTEST_C" };
 const int LOGINDEX = 42 + strlen("HILOGTEST_C");
+constexpr uint32_t QUERY_INTERVAL = 1; // sleep 1s
+const HiLogLabel KMSG_LABEL = { LOG_KMSG, 0xD002D00, "HILOGTEST_C" };
+const std::string PRIV_STR = "<private>";
 
 std::string GetCmdResultFromPopen(const std::string& cmd)
 {
@@ -48,6 +51,33 @@ std::string GetCmdResultFromPopen(const std::string& cmd)
     pclose(fp);
     return ret;
 }
+
+bool IsExistInCmdResult(const std::string &cmd, const std::string &str)
+{
+    if (cmd.empty()) {
+        return false;
+    }
+    FILE* fp = popen(cmd.c_str(), "r");
+    if (fp == nullptr) {
+        return false;
+    }
+    bool ret = false;
+    char* buffer = nullptr;
+    size_t len = 0;
+    while (getline(&buffer, &len, fp) != -1) {
+        std::string line = buffer;
+        if (line.find(str) != string::npos) {
+            ret = true;
+            break;
+        }
+    }
+    if (buffer != nullptr) {
+        free(buffer);
+        buffer = nullptr;
+    }
+    pclose(fp);
+    return ret;
+}
 }
 
 void HilogPrintTest::SetUpTestCase()
@@ -205,4 +235,25 @@ const vector<string> PrecisionVec = {
         EXPECT_EQ(log, PrecisionVec[i]);
     }
 }
+
+/**
+ * @tc.name: Dfx_HilogPrintTest_HilogKmsgPrivacyTest
+ * @tc.desc: HilogKmsgPrivacyTest.
+ * @tc.type: FUNC
+ */
+HWTEST_F(HilogPrintTest, HilogKmsgPrivacyTest, TestSize.Level1)
+{
+    GTEST_LOG_(INFO) << "HilogKmsgPrivacyTest: start.";
+    std::string msg = "HilogPrintTest:HilogKmsgPrivacyTest";
+    HiLog::Info(KMSG_LABEL, "%s", msg.c_str());
+    sleep(QUERY_INTERVAL);
+    EXPECT_TRUE(IsExistInCmdResult("hilog -t kmsg -x |grep HILOGTEST_C", PRIV_STR));
+
+    (void)GetCmdResultFromPopen("hilog -r");
+    (void)GetCmdResultFromPopen("hilog -p off");
+    HiLog::Info(KMSG_LABEL, "%s", msg.c_str());
+    sleep(QUERY_INTERVAL);
+    EXPECT_TRUE(IsExistInCmdResult("hilog -t kmsg -x |grep HILOGTEST_C", msg));
+    (void)GetCmdResultFromPopen("hilog -p on");
+}
 } // namespace
\ No newline at end of file