diff --git a/api/project.go b/api/project.go
index 9c711e17d..73fa4ae70 100644
--- a/api/project.go
+++ b/api/project.go
@@ -162,10 +162,14 @@ func (p *ProjectAPI) FilterAccessLog() {
 
 	username := filter.Username
 	keywords := filter.Keywords
-	beginTime := filter.BeginTime
-	endTime := filter.EndTime
 
-	query := models.AccessLog{ProjectId: p.projectId, Username: "%" + username + "%", Keywords: keywords, BeginTime: beginTime, EndTime: endTime}
+	beginTime := time.Unix(filter.BeginTimestamp, 0)
+	endTime := time.Unix(filter.EndTimestamp, 0)
+
+	query := models.AccessLog{ProjectId: p.projectId, Username: "%" + username + "%", Keywords: keywords, BeginTime: beginTime, BeginTimestamp: filter.BeginTimestamp, EndTime: endTime, EndTimestamp: filter.EndTimestamp}
+
+	log.Printf("Query AccessLog: begin: %v, end: %v, keywords: %s", query.BeginTime, query.EndTime, query.Keywords)
+
 	accessLogList, err := dao.GetAccessLogs(query)
 	if err != nil {
 		log.Printf("Error occurred in GetAccessLogs: %v", err)
diff --git a/dao/access_log.go b/dao/access_log.go
index 4e99cfdb8..5860a30c3 100644
--- a/dao/access_log.go
+++ b/dao/access_log.go
@@ -73,13 +73,13 @@ func GetAccessLogs(accessLog models.AccessLog) ([]models.AccessLog, error) {
 			}
 		}
 	}
-	if accessLog.BeginTime != "" {
-		sql += ` and a.op_time >= str_to_date(?, '%Y-%m-%d %H:%i:%s') `
-		queryParam = append(queryParam, accessLog.BeginTime+" 00:00:00.000000")
+	if accessLog.BeginTimestamp > 0 {
+		sql += ` and a.op_time >= ? `
+		queryParam = append(queryParam, accessLog.BeginTime)
 	}
-	if accessLog.EndTime != "" {
-		sql += ` and a.op_time <= str_to_date(?, '%Y-%m-%d %H:%i:%s') `
-		queryParam = append(queryParam, accessLog.EndTime+" 23:59:59.99999")
+	if accessLog.EndTimestamp > 0 {
+		sql += ` and a.op_time <= ? `
+		queryParam = append(queryParam, accessLog.EndTime)
 	}
 
 	sql += ` order by a.op_time desc `
diff --git a/models/access_log.go b/models/access_log.go
index 7c980103d..a167d70de 100644
--- a/models/access_log.go
+++ b/models/access_log.go
@@ -26,10 +26,11 @@ type AccessLog struct {
 	Guid      string
 	Operation string
 	OpTime    time.Time
-	OpTimeStr string
-
 	Username  string
 	Keywords  string
-	BeginTime string
-	EndTime   string
+
+	BeginTime      time.Time
+	BeginTimestamp int64
+	EndTime        time.Time
+	EndTimestamp   int64
 }
diff --git a/static/resources/js/item-detail.js b/static/resources/js/item-detail.js
index d2ff211bb..764df0fe6 100644
--- a/static/resources/js/item-detail.js
+++ b/static/resources/js/item-detail.js
@@ -374,24 +374,38 @@ jQuery(function(){
 				listUser(username);
 			});
 			
+			function toUTCSeconds(date, hour, min, sec) {
+				var t = new Date(date);
+				t.setHours(hour);
+				t.setMinutes(min);
+				t.setSeconds(sec);
+				var utcTime = new Date(t.getUTCFullYear(),
+								t.getUTCMonth(), 
+								t.getUTCDate(),
+								t.getUTCHours(),
+								t.getUTCMinutes(),
+								t.getUTCSeconds());
+				return utcTime.getTime() / 1000;
+			}
+			
 			$("#btnFilterLog").on("click", function(){
 
 				var projectId = $("#projectId").val();	
 				var username = $("#txtSearchUserName").val();
 				
-				var beginTime = "";
-				var endTime = "";
+				var beginTimestamp = 0;
+				var endTimestamp = 0;
 				
 				if($("#begindatepicker").val() != ""){
-					beginTime = moment(new Date($("#begindatepicker").val())).format("YYYY-MM-DD");	
+					beginTimestamp = toUTCSeconds($("#begindatepicker").val(), 0, 0, 0);	
 				}
 				if($("#enddatepicker").val() != ""){
-					endTime	= moment(new Date($("#enddatepicker").val())).format("YYYY-MM-DD");	
+					endTimestamp = toUTCSeconds($("#enddatepicker").val(), 23, 59, 59);	
 				}
 			
 				new AjaxUtil({
 					url: "/api/projects/" + projectId + "/logs/filter",
-					data:{"username":username, "project_id" : projectId, "keywords" : getKeyWords() , "beginTime" : beginTime, "endTime" : endTime},
+					data:{"username":username, "project_id" : projectId, "keywords" : getKeyWords() , "beginTimestamp" : beginTimestamp, "endTimestamp" : endTimestamp},
 					type: "post",
 					success: function(data, status, xhr){
 						if(xhr && xhr.status == 200){