diff --git a/src/common/session.cpp b/src/common/session.cpp
index 724c8fe6130e829164806f7ee45de204dbef75da..2283fc74b83ce0c8f92c8fbb14f374c6242cb0a3 100644
--- a/src/common/session.cpp
+++ b/src/common/session.cpp
@@ -18,7 +18,9 @@
 namespace Hdc {
 HdcSessionBase::HdcSessionBase(bool serverOrDaemonIn)
 {
-    // server/daemon common initialize
+    // server/daemon common initialization logic
+    string threadNum = std::to_string(SIZE_THREAD_POOL);
+    uv_os_setenv("UV_THREADPOOL_SIZE", threadNum.c_str());
     uv_loop_init(&loopMain);
     WRITE_LOG(LOG_DEBUG, "loopMain init");
     uv_rwlock_init(&mainAsync);
@@ -28,16 +30,6 @@ HdcSessionBase::HdcSessionBase(bool serverOrDaemonIn)
     ctxUSB = nullptr;
     wantRestart = false;
 
-    // server/daemon common set
-    string threadNum = std::to_string(SIZE_THREAD_POOL);
-    uv_os_setenv("UV_THREADPOOL_SIZE", threadNum.c_str());
-#ifndef _WIN32
-    // global signal detect
-    umask(0);
-    signal(SIGPIPE, SIG_IGN);  // SIG_DFL
-                               // prevent zoombie process, let 'init' process do process's clear
-    signal(SIGCHLD, SIG_IGN);
-#endif
 #ifdef HDC_HOST
     if (serverOrDaemon) {
         libusb_init((libusb_context **)&ctxUSB);
diff --git a/src/daemon/main.cpp b/src/daemon/main.cpp
index 542908e90d813fe0cdfd649d922d4661761534be..820c383a6e4529b917d849c2a2043dd2590f37cb 100644
--- a/src/daemon/main.cpp
+++ b/src/daemon/main.cpp
@@ -36,7 +36,7 @@ bool ForkChildCheck(int argc, const char *argv[])
     // hdcd -fork  #fork
     char modeSet[BUF_SIZE_TINY] = "";
     Base::GetHdcProperty("persist.hdc.mode", modeSet, BUF_SIZE_TINY);
-    Base::PrintMessage("Background mode, persist.hdc.mode:[%s]", modeSet);
+    Base::PrintMessage("Background mode, persist.hdc.mode");
     string workMode = modeSet;
     workMode = Base::Trim(workMode);
     if (workMode == CMDSTR_TMODE_TCP) {