diff --git a/internal/nodes/http_request.go b/internal/nodes/http_request.go
index 26c0d0b..8f9d87c 100644
--- a/internal/nodes/http_request.go
+++ b/internal/nodes/http_request.go
@@ -321,14 +321,14 @@ func (this *HTTPRequest) doEnd() {
 
 		if this.isCached {
 			countCached = 1
-			cachedBytes = this.writer.SentBodyBytes()
+			cachedBytes = this.writer.SentBodyBytes() + this.writer.SentHeaderBytes()
 		}
 		if this.isAttack {
 			countAttacks = 1
 			attackBytes = this.CalculateSize()
 		}
 
-		stats.SharedTrafficStatManager.Add(this.ReqServer.Id, this.ReqHost, this.writer.SentBodyBytes(), cachedBytes, 1, countCached, countAttacks, attackBytes, this.ReqServer.ShouldCheckTrafficLimit(), this.ReqServer.PlanId())
+		stats.SharedTrafficStatManager.Add(this.ReqServer.Id, this.ReqHost, this.writer.SentBodyBytes()+this.writer.SentHeaderBytes(), cachedBytes, 1, countCached, countAttacks, attackBytes, this.ReqServer.ShouldCheckTrafficLimit(), this.ReqServer.PlanId())
 	}
 
 	// 指标
@@ -1292,7 +1292,7 @@ func (this *HTTPRequest) CalculateSize() (size int64) {
 	size += int64(len(this.RawReq.Proto)) + 1
 	for k, v := range this.RawReq.Header {
 		for _, v1 := range v {
-			size += int64(len(k) + 2 /** : **/ + len(v1))
+			size += int64(len(k) + 2 /** : **/ + len(v1) + 1)
 		}
 	}
 
diff --git a/internal/nodes/http_request_cache.go b/internal/nodes/http_request_cache.go
index dfa909e..a40338c 100644
--- a/internal/nodes/http_request_cache.go
+++ b/internal/nodes/http_request_cache.go
@@ -304,6 +304,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 
 	// 读取Header
 	var headerBuf = []byte{}
+	this.writer.SetSentHeaderBytes(reader.HeaderSize())
 	err = reader.ReadHeader(buf, func(n int) (goNext bool, err error) {
 		headerBuf = append(headerBuf, buf[:n]...)
 		for {
diff --git a/internal/nodes/http_writer.go b/internal/nodes/http_writer.go
index 960b843..be9627a 100644
--- a/internal/nodes/http_writer.go
+++ b/internal/nodes/http_writer.go
@@ -58,8 +58,9 @@ type HTTPWriter struct {
 
 	size int64
 
-	statusCode    int
-	sentBodyBytes int64
+	statusCode      int
+	sentBodyBytes   int64
+	sentHeaderBytes int64
 
 	isOk       bool // 是否完全成功
 	isFinished bool // 是否已完成
@@ -692,6 +693,23 @@ func (this *HTTPWriter) SentBodyBytes() int64 {
 	return this.sentBodyBytes
 }
 
+// SentHeaderBytes 计算发送的Header字节数
+func (this *HTTPWriter) SentHeaderBytes() int64 {
+	if this.sentHeaderBytes > 0 {
+		return this.sentHeaderBytes
+	}
+	for k, v := range this.Header() {
+		for _, v1 := range v {
+			this.sentHeaderBytes += int64(len(k) + 2 + len(v1) + 1)
+		}
+	}
+	return this.sentHeaderBytes
+}
+
+func (this *HTTPWriter) SetSentHeaderBytes(sentHeaderBytes int64) {
+	this.sentHeaderBytes = sentHeaderBytes
+}
+
 // WriteHeader 写入状态码
 func (this *HTTPWriter) WriteHeader(statusCode int) {
 	if this.rawWriter != nil {
diff --git a/internal/stats/traffic_stat_manager.go b/internal/stats/traffic_stat_manager.go
index d691e83..25fb01b 100644
--- a/internal/stats/traffic_stat_manager.go
+++ b/internal/stats/traffic_stat_manager.go
@@ -101,7 +101,7 @@ func (this *TrafficStatManager) Add(serverId int64, domain string, bytes int64,
 
 	this.totalRequests++
 
-	timestamp := utils.FloorUnixTime(300)
+	var timestamp = utils.FloorUnixTime(300)
 	key := strconv.FormatInt(timestamp, 10) + strconv.FormatInt(serverId, 10)
 	this.locker.Lock()