diff --git a/common/Utils.go b/common/Utils.go
index 95f0141..64fbf2a 100644
--- a/common/Utils.go
+++ b/common/Utils.go
@@ -1,7 +1,6 @@
 package common
 
 import (
-	"LAPP_PRN_Service/db"
 	"container/list"
 	"errors"
 	"fmt"
@@ -359,12 +358,16 @@ func SendFileToPrinter(filePath string, ip string, port int) error {
 	return nil
 }
 
+type ByteFile struct {
+	ByteLine []byte
+}
+
 // 发送到打印机
-func SendFileBySerial(bytesFile []db.ByteFile, SerialName string, SerialPort int) error {
+func SendFileBySerial(bytesFile []ByteFile, SerialName string, SerialPort int) error {
 
 	var (
 		err      error
-		bytesRow db.ByteFile
+		bytesRow ByteFile
 	)
 
 	c := &serial.Config{Name: SerialName, Baud: SerialPort}
diff --git a/db/PrintTask.go b/db/PrintTask.go
index 530a27d..1390ddd 100644
--- a/db/PrintTask.go
+++ b/db/PrintTask.go
@@ -23,12 +23,8 @@ type PrintTask struct {
 	PrintDetailList []PrintDetail
 }
 
-type ByteFile struct {
-	ByteLine []byte
-}
-
 // 基于模板将打印任务转换成字节码输出
-func (t *PrintTask) GenBytesFile(conf *conf.EnvConfig) ([]ByteFile, error) {
+func (t *PrintTask) GenBytesFile(conf *conf.EnvConfig) ([]common.ByteFile, error) {
 	TemplatePath := common.EnsureDir(conf.TemplatePath)
 	templatefile := filepath.Join(TemplatePath, t.PrintHead.TemplateFile)
 	f, err := os.Open(templatefile)
@@ -39,7 +35,7 @@ func (t *PrintTask) GenBytesFile(conf *conf.EnvConfig) ([]ByteFile, error) {
 		return nil, err
 	}
 
-	var results []ByteFile
+	var results []common.ByteFile
 	scanner := bufio.NewScanner(f)
 	for scanner.Scan() {
 		linetext := scanner.Text()
@@ -47,7 +43,7 @@ func (t *PrintTask) GenBytesFile(conf *conf.EnvConfig) ([]ByteFile, error) {
 			// -1 替换所有； 1 替换第一个； 5 替换前5个
 			linetext = strings.Replace(linetext, pd.VarName, pd.VarValue, -1)
 		}
-		var r ByteFile
+		var r common.ByteFile
 		r.ByteLine = []byte(linetext)
 		results = append(results, r)
 	}
diff --git a/engine/printer.go b/engine/printer.go
index 8684593..6f99271 100644
--- a/engine/printer.go
+++ b/engine/printer.go
@@ -44,10 +44,10 @@ func (p *Printer) Create(printertab db.Printer) {
 
 // 输出打印任务到端口
 // 打印任务是以ByteArray数组类型的文件行
-func (p *Printer) printTaskBytesFile(bytesFile []db.ByteFile) error {
+func (p *Printer) printTaskBytesFile(bytesFile []common.ByteFile) error {
 	var (
 		err      error
-		bytesRow db.ByteFile
+		bytesRow common.ByteFile
 	)
 	for _, bytesRow = range bytesFile {
 		if _, err = p.conn.Write(bytesRow.ByteLine); err != nil {
@@ -88,7 +88,7 @@ func (p *Printer) printBySocket(conf *conf.EnvConfig, saveChan chan db.PrintTask
 	var (
 		t         db.PrintTask
 		err       error
-		bytesFile []db.ByteFile
+		bytesFile []common.ByteFile
 	)
 
 	// 从缓存队列的头部取出一个任务并输出打印
@@ -196,7 +196,7 @@ func (p *Printer) printBySerial(conf *conf.EnvConfig, saveChan chan db.PrintTask
 	var (
 		t         db.PrintTask
 		err       error
-		bytesFile []db.ByteFile
+		bytesFile []common.ByteFile
 	)
 
 	for {