diff --git a/src/main/java/com/nis/util/Constants.java b/src/main/java/com/nis/util/Constants.java
index c54b2c096..333d58f8a 100644
--- a/src/main/java/com/nis/util/Constants.java
+++ b/src/main/java/com/nis/util/Constants.java
@@ -435,6 +435,8 @@ public final class Constants {
 	//报表类型,2-	配置报表业务
 	public static final Integer BUSINESSTYPE_REPORT=Configurations.getIntProperty("businesstype_report", 2);
 	//默认日志查询时长(ms)
+	public static final String LOG_TIME_START = Configurations.getStringProperty("log_time_start",null);
+	//默认日志查询时长(ms)
 	public static final Integer LOG_TIME_RANGE = Configurations.getIntProperty("log_time_range", 300000);
 	//日志检索菜单ID
 	public static final Integer LOGSEARCH_MENU_ID = Configurations.getIntProperty("logsearch_menu_id", 152);
diff --git a/src/main/resources/nis.properties b/src/main/resources/nis.properties
index 4f140cd64..9ba786605 100644
--- a/src/main/resources/nis.properties
+++ b/src/main/resources/nis.properties
@@ -466,4 +466,5 @@ app_id_region=APP_ID
 #application spec service code scope
 app_spec_service_code_max_val=310000
 app_spec_service_code_min_val=300001
-groupReuseSources=groupReuseSources
\ No newline at end of file
+groupReuseSources=groupReuseSources
+log_time_start=2018-07-01 00:00:00
\ No newline at end of file