diff --git a/include/os/os.h b/include/os/os.h
index 41180ba49edf6ecee2482ab70cc419983bd11d8d..254c16efbe598a68c549a6c09e36b077929281bf 100644
--- a/include/os/os.h
+++ b/include/os/os.h
@@ -104,8 +104,6 @@ extern "C" {
 #include "osTimezone.h"
 #include "osEnv.h"
 
-void osDefaultInit();
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 269c92a670ffed95c2cd2b5d1f76bf97d5615f1b..dca70ce76b057447018fc23d2e911eb492670c84 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -631,7 +631,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
 
 int32_t taosCreateLog(const char *logname, int32_t logFileNum, const char *cfgDir, const char **envCmd,
                       const char *envFile, char *apolloUrl, SArray *pArgs, bool tsc) {
-  osDefaultInit();
+  if (tsCfg == NULL) osDefaultInit();
 
   SConfig *pCfg = cfgInit();
   if (pCfg == NULL) return -1;
diff --git a/source/os/src/osLocale.c b/source/os/src/osLocale.c
index d2369ea2a29e2e45979b041e1f2b586c6374c4e3..c2d10f3668ba2856380eccbdadde74f5d6ed23ef 100644
--- a/source/os/src/osLocale.c
+++ b/source/os/src/osLocale.c
@@ -88,11 +88,11 @@ void taosSetSystemLocale(const char *inLocale, const char *inCharSet) {
 
 void taosGetSystemLocale(char *outLocale, char *outCharset) {
 #ifdef WINDOWS
-  char *locale = setlocale(LC_CTYPE, "chs");
+  char *locale = setlocale(LC_CTYPE, "en_US.UTF-8");
   if (locale != NULL) {
     tstrncpy(outLocale, locale, TD_LOCALE_LEN);
   }
-  strcpy(outCharset, "cp936");
+  strcpy(outCharset, "UTF-8");
 
 #elif defined(_TD_DARWIN_64)
   /*
diff --git a/tests/script/wtest.bat b/tests/script/wtest.bat
index 1aa27202c6a0b3da4da01741d8f2ba67de39bfef..1f089c9d869b8add918291e0807aed45063cf797 100644
--- a/tests/script/wtest.bat
+++ b/tests/script/wtest.bat
@@ -52,7 +52,7 @@ echo wal            0             >> %TAOS_CFG%
 echo asyncLog       0             >> %TAOS_CFG%
 echo locale         en_US.UTF-8   >> %TAOS_CFG%
 echo enableCoreFile 1             >> %TAOS_CFG%
-echo charset        cp65001       >> %TAOS_CFG%
+echo charset        UTF-8         >> %TAOS_CFG%
 
 set "FILE_NAME=testSuite.sim"
 if "%1" == "-f" set "FILE_NAME=%2"
diff --git a/tools/shell/src/shellCommand.c b/tools/shell/src/shellCommand.c
index ef71f3fce6f8b21f09f85ed373233cc5714e6316..ddd4f7a59dbcfa83448c07c9a6652f0a1f467b8c 100644
--- a/tools/shell/src/shellCommand.c
+++ b/tools/shell/src/shellCommand.c
@@ -21,6 +21,7 @@
 #define UP    3
 #define DOWN  4
 #define PSIZE shell.info.promptSize
+#define SHELL_INPUT_MAX_COMMAND_SIZE 10000
 
 typedef struct {
   char    *buffer;
@@ -227,6 +228,7 @@ void shellPrintChar(char c, int32_t times) {
 }
 
 void shellPositionCursor(int32_t step, int32_t direction) {
+#ifndef WINDOWS
   if (step > 0) {
     if (direction == LEFT) {
       fprintf(stdout, "\033[%dD", step);
@@ -239,6 +241,7 @@ void shellPositionCursor(int32_t step, int32_t direction) {
     }
     fflush(stdout);
   }
+#endif
 }
 
 void shellUpdateBuffer(SShellCmd *cmd) {
@@ -330,10 +333,14 @@ void shellClearScreen(int32_t ecmd_pos, int32_t cursor_pos) {
   int32_t command_x = ecmd_pos / ws_col;
   shellPositionCursor(cursor_y, LEFT);
   shellPositionCursor(command_x - cursor_x, DOWN);
+#ifndef WINDOWS
   fprintf(stdout, "\033[2K");
+#endif
   for (int32_t i = 0; i < command_x; i++) {
     shellPositionCursor(1, UP);
+  #ifndef WINDOWS
     fprintf(stdout, "\033[2K");
+  #endif
   }
   fflush(stdout);
 }
@@ -394,6 +401,38 @@ void shellShowOnScreen(SShellCmd *cmd) {
   fflush(stdout);
 }
 
+char taosGetConsoleChar() {
+#ifdef WINDOWS
+  static void *console = NULL;
+  if (console == NULL) {
+    console = GetStdHandle(STD_INPUT_HANDLE);
+  }
+  static TdWchar buf[SHELL_INPUT_MAX_COMMAND_SIZE];
+  static char mbStr[5];
+  static unsigned long bufLen = 0;
+  static uint16_t bufIndex = 0, mbStrIndex = 0, mbStrLen = 0;
+  if (bufLen == 0) {
+    ReadConsoleW(console, buf, SHELL_INPUT_MAX_COMMAND_SIZE, &bufLen, NULL);
+    bufIndex = 0;
+  }
+  if (mbStrLen == 0){
+    mbStrLen = WideCharToMultiByte(CP_UTF8, 0, &buf[bufIndex], 1, mbStr, sizeof(mbStr), NULL, NULL);
+    mbStrIndex = 0;
+    bufIndex++;
+  }
+  mbStrIndex++;
+  if (mbStrIndex == mbStrLen) {
+    mbStrLen = 0;
+    if (bufIndex == bufLen) {
+      bufLen = 0;
+    }
+  }
+  return mbStr[mbStrIndex-1];
+#else
+  return (char)getchar();  // getchar() return an 'int32_t' value
+#endif
+}
+
 int32_t shellReadCommand(char *command) {
   SShellHistory *pHistory = &shell.history;
   SShellCmd      cmd = {0};
@@ -407,7 +446,7 @@ int32_t shellReadCommand(char *command) {
   // Read input.
   char c;
   while (1) {
-    c = (char)getchar();  // getchar() return an 'int32_t' value
+    c = taosGetConsoleChar();
 
     if (c == EOF) {
       return c;
@@ -417,7 +456,7 @@ int32_t shellReadCommand(char *command) {
       int32_t count = shellCountPrefixOnes(c);
       utf8_array[0] = c;
       for (int32_t k = 1; k < count; k++) {
-        c = (char)getchar();
+        c = taosGetConsoleChar();
         utf8_array[k] = c;
       }
       shellInsertChar(&cmd, utf8_array, count);
@@ -446,6 +485,7 @@ int32_t shellReadCommand(char *command) {
           shellBackspaceChar(&cmd);
           break;
         case '\n':
+          break;
         case '\r':
         #ifdef WINDOWS 
         #else
@@ -472,10 +512,10 @@ int32_t shellReadCommand(char *command) {
           break;
       }
     } else if (c == '\033') {
-      c = (char)getchar();
+      c = taosGetConsoleChar();
       switch (c) {
         case '[':
-          c = (char)getchar();
+          c = taosGetConsoleChar();
           switch (c) {
             case 'A':  // Up arrow
               if (hist_counter != pHistory->hstart) {
@@ -502,35 +542,35 @@ int32_t shellReadCommand(char *command) {
               shellMoveCursorLeft(&cmd);
               break;
             case '1':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // Home key
                 shellPositionCursorHome(&cmd);
               }
               break;
             case '2':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // Insert key
               }
               break;
             case '3':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // Delete key
                 shellDeleteChar(&cmd);
               }
               break;
             case '4':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // End key
                 shellPositionCursorEnd(&cmd);
               }
               break;
             case '5':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // Page up key
               }
               break;
             case '6':
-              if ((c = (char)getchar()) == '~') {
+              if ((c = taosGetConsoleChar()) == '~') {
                 // Page down key
               }
               break;
diff --git a/tools/shell/src/shellEngine.c b/tools/shell/src/shellEngine.c
index 1f29237d38b0441507bef05a39586d8a3b80ca56..2f8a21e47c0d7577e991f9c51e69b26804fc967d 100644
--- a/tools/shell/src/shellEngine.c
+++ b/tools/shell/src/shellEngine.c
@@ -393,15 +393,11 @@ void shellPrintNChar(const char *str, int32_t length, int32_t width) {
       break;
     }
     int w = 0;
-#ifdef WINDOWS
-    w = bytes;
-#else
     if(*(str + pos) == '\t' || *(str + pos) == '\n' || *(str + pos) == '\r'){
       w = bytes;
     }else{
       w = taosWcharWidth(wc);
     }
-#endif
     pos += bytes;
 
     if (w <= 0) {