diff --git a/iotdb/src/main/java/org/apache/iotdb/db/qp/QueryProcessor.java b/iotdb/src/main/java/org/apache/iotdb/db/qp/QueryProcessor.java
index e7abc1965351..6dea246a217a 100644
--- a/iotdb/src/main/java/org/apache/iotdb/db/qp/QueryProcessor.java
+++ b/iotdb/src/main/java/org/apache/iotdb/db/qp/QueryProcessor.java
@@ -68,8 +68,6 @@ public PhysicalPlan parseSQLToPhysicalPlan(String sqlStr)
   public PhysicalPlan parseSQLToPhysicalPlan(String sqlStr, ZoneId zoneId)
       throws QueryProcessorException, ArgsErrorException, ProcessorException {
     AstNode astNode = parseSQLToAST(sqlStr);
-    System.out.println("parseASTToOperator");
-    System.out.println(zoneId);
     Operator operator = parseASTToOperator(astNode, zoneId);
     operator = logicalOptimize(operator, executor);
     PhysicalGenerator physicalGenerator = new PhysicalGenerator(executor);
diff --git a/iotdb/src/main/java/org/apache/iotdb/db/qp/constant/DatetimeUtils.java b/iotdb/src/main/java/org/apache/iotdb/db/qp/constant/DatetimeUtils.java
index 1d3bc3340dbf..5011071c44b1 100644
--- a/iotdb/src/main/java/org/apache/iotdb/db/qp/constant/DatetimeUtils.java
+++ b/iotdb/src/main/java/org/apache/iotdb/db/qp/constant/DatetimeUtils.java
@@ -177,16 +177,23 @@ public class DatetimeUtils {
 
   public static long convertDatetimeStrToMillisecond(String str, ZoneId zoneId)
       throws LogicalOperatorException {
-    return convertDatetimeStrToMillisecond(str, toZoneOffset(zoneId));
+    return convertDatetimeStrToMillisecond(str, toZoneOffset(zoneId), 0);
   }
 
   /**
    * convert date time string to millisecond.
    */
-  public static long convertDatetimeStrToMillisecond(String str, ZoneOffset offset)
+  public static long convertDatetimeStrToMillisecond(String str, ZoneOffset offset, int depth)
       throws LogicalOperatorException {
-    if (str.length() - str.lastIndexOf('+') != 6 && str.length() - str.lastIndexOf('-') != 6) {
-      return convertDatetimeStrToMillisecond(str + offset, offset);
+    if (depth >= 2){
+      throw new DateTimeException(
+              String.format("Failed to convert %s to millisecond, zone offset is %s, "
+                      + "please input like 2011-12-03T10:15:30 or 2011-12-03T10:15:30+01:00", str, offset));
+    }
+    if (str.indexOf('Z') > 0){
+      return convertDatetimeStrToMillisecond(str.substring(0, str.indexOf('Z')) + "+00:00", offset, depth);
+    } else if (str.length() - str.lastIndexOf('+') != 6 && str.length() - str.lastIndexOf('-') != 6) {
+      return convertDatetimeStrToMillisecond(str + offset, offset, depth + 1);
     } else if (str.indexOf('[') > 0 || str.indexOf(']') > 0) {
       throw new DateTimeException(
           String.format("%s with [time-region] at end is not supported now, "
diff --git a/iotdb/src/test/java/org/apache/iotdb/db/sql/DatetimeUtilsTest.java b/iotdb/src/test/java/org/apache/iotdb/db/sql/DatetimeUtilsTest.java
index c76874a00b18..ace139ba6ed1 100644
--- a/iotdb/src/test/java/org/apache/iotdb/db/sql/DatetimeUtilsTest.java
+++ b/iotdb/src/test/java/org/apache/iotdb/db/sql/DatetimeUtilsTest.java
@@ -36,37 +36,47 @@ public class DatetimeUtilsTest {
   private ZoneId zoneId;
   // 1546413207689
   // 2019-01-02T15:13:27.689+08:00
+  private final long timestamp = 1546413207689L;
   private long delta;
 
   @Before
   public void setUp() throws Exception {
+  }
+
+  @After
+  public void tearDown() throws Exception {
+  }
+
+  @Test
+  public void test1() throws LogicalOperatorException{
     zoneOffset = ZonedDateTime.now().getOffset();
     zoneId = ZoneId.systemDefault();
-    System.out.println(zoneOffset.toString());
     if(zoneOffset.toString().equals("Z")){
       delta = 8 * 3600000;
-      zoneOffset = ZoneOffset.of("+00:00");
     } else {
       delta = (8 - Long.parseLong(zoneOffset.toString().split(":")[0])) * 3600000;
     }
-    System.out.println(delta);
+    testConvertDatetimeStrToLongWithoutMS(zoneOffset, zoneId, timestamp - 689 + delta);
+    testConvertDatetimeStrToLongWithMS(zoneOffset, zoneId, timestamp + delta);
   }
 
-  @After
-  public void tearDown() throws Exception {
+  @Test
+  public void test2() throws LogicalOperatorException{
+    zoneOffset = ZoneOffset.UTC;
+    zoneId = ZoneId.of("Etc/UTC");
+    delta = 8 * 3600000;
+    testConvertDatetimeStrToLongWithoutMS(zoneOffset, zoneId, timestamp - 689 + delta);
+    testConvertDatetimeStrToLongWithMS(zoneOffset, zoneId, timestamp + delta);
   }
 
-  @Test
-  public void testConvertDatetimeStrToLongWithoutMS() throws LogicalOperatorException {
+  public void testConvertDatetimeStrToLongWithoutMS(ZoneOffset zoneOffset, ZoneId zoneId, long res) throws LogicalOperatorException {
     String[] timeFormatWithoutMs = new String[]{"2019-01-02 15:13:27", "2019/01/02 15:13:27",
         "2019.01.02 15:13:27", "2019-01-02T15:13:27", "2019/01/02T15:13:27", "2019.01.02T15:13:27",
         "2019-01-02 15:13:27" + zoneOffset, "2019/01/02 15:13:27" + zoneOffset,
         "2019.01.02 15:13:27" + zoneOffset, "2019-01-02T15:13:27" + zoneOffset,
         "2019/01/02T15:13:27" + zoneOffset, "2019.01.02T15:13:27" + zoneOffset,};
-
-    long res = 1546413207000L + delta;
     for (String str : timeFormatWithoutMs) {
-      Assert.assertEquals(res, DatetimeUtils.convertDatetimeStrToMillisecond(str, zoneOffset));
+      Assert.assertEquals(res, DatetimeUtils.convertDatetimeStrToMillisecond(str, zoneOffset, 0));
     }
 
     for (String str : timeFormatWithoutMs) {
@@ -75,8 +85,7 @@ public void testConvertDatetimeStrToLongWithoutMS() throws LogicalOperatorExcept
 
   }
 
-  @Test
-  public void testConvertDatetimeStrToLongWithMS() throws LogicalOperatorException {
+  public void testConvertDatetimeStrToLongWithMS(ZoneOffset zoneOffset, ZoneId zoneId, long res) throws LogicalOperatorException {
     String[] timeFormatWithoutMs = new String[]{"2019-01-02 15:13:27.689",
         "2019/01/02 15:13:27.689",
         "2019.01.02 15:13:27.689", "2019-01-02T15:13:27.689", "2019/01/02T15:13:27.689",
@@ -84,10 +93,8 @@ public void testConvertDatetimeStrToLongWithMS() throws LogicalOperatorException
         "2019/01/02 15:13:27.689" + zoneOffset, "2019.01.02 15:13:27.689" + zoneOffset,
         "2019-01-02T15:13:27.689" + zoneOffset, "2019/01/02T15:13:27.689" + zoneOffset,
         "2019.01.02T15:13:27.689" + zoneOffset,};
-
-    long res = 1546413207689L + delta;
     for (String str : timeFormatWithoutMs) {
-      assertEquals(res, DatetimeUtils.convertDatetimeStrToMillisecond(str, zoneOffset));
+      assertEquals(res, DatetimeUtils.convertDatetimeStrToMillisecond(str, zoneOffset, 0));
     }
 
     for (String str : timeFormatWithoutMs) {
@@ -101,4 +108,12 @@ public void createTest() {
     // ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant(Instant.ofEpochMilli(timestamp), ZoneId.of("+08:00"));
     // System.out.println(zonedDateTime);
   }
+
+  public static void main(String[] args){
+//    System.out.println(DatetimeUtils.toZoneOffset(ZoneId.of("Etc/UTC")));
+    for(String zoneId : ZoneId.getAvailableZoneIds()){
+      System.out.println(zoneId + ": " + DatetimeUtils.toZoneOffset(ZoneId.of(zoneId)));
+    }
+//	  System.out.println(ZoneOffset.of("+00:00"));
+  }
 }