diff --git a/convert.go b/convert.go
index 0205e519..978818c7 100644
--- a/convert.go
+++ b/convert.go
@@ -7,7 +7,6 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	"github.com/rs/zerolog/log"
 	"gopkg.in/yaml.v3"
 )
 
diff --git a/har2case/core.go b/har2case/core.go
index 2ad3a066..5d983b39 100644
--- a/har2case/core.go
+++ b/har2case/core.go
@@ -12,11 +12,12 @@ import (
 	"strings"
 
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
 
 	"github.com/httprunner/hrp"
 )
 
+var log = hrp.GetLogger()
+
 const (
 	suffixJSON = ".json"
 	suffixYAML = ".yaml"
diff --git a/hrp/cmd/boom.go b/hrp/cmd/boom.go
index 118f8083..6de19900 100644
--- a/hrp/cmd/boom.go
+++ b/hrp/cmd/boom.go
@@ -18,6 +18,7 @@ var boomCmd = &cobra.Command{
   $ hrp boom examples/	# run testcases in specified folder`,
 	Args: cobra.MinimumNArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
+		hrp.SetLogLevel(logLevel)
 		var paths []hrp.ITestCase
 		for _, arg := range args {
 			paths = append(paths, &hrp.TestCasePath{Path: arg})
diff --git a/hrp/cmd/har2case.go b/hrp/cmd/har2case.go
index 749ff4e4..4a3088af 100644
--- a/hrp/cmd/har2case.go
+++ b/hrp/cmd/har2case.go
@@ -4,6 +4,7 @@ import (
 	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
 
+	"github.com/httprunner/hrp"
 	"github.com/httprunner/hrp/har2case"
 )
 
@@ -14,6 +15,7 @@ var har2caseCmd = &cobra.Command{
 	Long:  `Convert HAR to json/yaml testcase files`,
 	Args:  cobra.MinimumNArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
+		hrp.SetLogLevel(logLevel)
 		var outputFiles []string
 		for _, arg := range args {
 			var outputPath string
diff --git a/hrp/cmd/root.go b/hrp/cmd/root.go
index 46f16caf..cbcb4ffb 100644
--- a/hrp/cmd/root.go
+++ b/hrp/cmd/root.go
@@ -21,9 +21,17 @@ Copyright 2021 debugtalk`,
 	Version: hrp.VERSION,
 }
 
+var (
+	logLevel string
+	logJSON  bool
+)
+
 // Execute adds all child commands to the root command and sets flags appropriately.
 // This is called by main.main(). It only needs to happen once to the rootCmd.
 func Execute() {
+	RootCmd.PersistentFlags().StringVarP(&logLevel, "log-level", "l", "INFO", "set log level")
+	RootCmd.PersistentFlags().BoolVar(&logJSON, "log-json", false, "set log to json format")
+
 	if err := RootCmd.Execute(); err != nil {
 		fmt.Println(err)
 		os.Exit(1)
diff --git a/hrp/cmd/run.go b/hrp/cmd/run.go
index 782cff8c..f23c08b1 100644
--- a/hrp/cmd/run.go
+++ b/hrp/cmd/run.go
@@ -16,6 +16,7 @@ var runCmd = &cobra.Command{
   $ hrp run examples/	# run testcases in specified folder`,
 	Args: cobra.MinimumNArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
+		hrp.SetLogLevel(logLevel)
 		var paths []hrp.ITestCase
 		for _, arg := range args {
 			paths = append(paths, &hrp.TestCasePath{Path: arg})
diff --git a/log.go b/log.go
new file mode 100644
index 00000000..c943208a
--- /dev/null
+++ b/log.go
@@ -0,0 +1,38 @@
+package hrp
+
+import (
+	"os"
+	"strings"
+
+	"github.com/rs/zerolog"
+	zlog "github.com/rs/zerolog/log"
+)
+
+var log = zlog.Logger
+
+func init() {
+	log = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+}
+
+func SetLogLevel(level string) {
+	level = strings.ToUpper(level)
+	log.Info().Msgf("Set log level to %s", level)
+	switch level {
+	case "DEBUG":
+		zerolog.SetGlobalLevel(zerolog.DebugLevel)
+	case "INFO":
+		zerolog.SetGlobalLevel(zerolog.InfoLevel)
+	case "WARN":
+		zerolog.SetGlobalLevel(zerolog.WarnLevel)
+	case "ERROR":
+		zerolog.SetGlobalLevel(zerolog.ErrorLevel)
+	case "FATAL":
+		zerolog.SetGlobalLevel(zerolog.FatalLevel)
+	case "PANIC":
+		zerolog.SetGlobalLevel(zerolog.PanicLevel)
+	}
+}
+
+func GetLogger() zerolog.Logger {
+	return log
+}
diff --git a/parser.go b/parser.go
index 07fe9f6d..4a16d993 100644
--- a/parser.go
+++ b/parser.go
@@ -9,7 +9,6 @@ import (
 	"strings"
 
 	"github.com/maja42/goval"
-	"github.com/rs/zerolog/log"
 
 	"github.com/httprunner/hrp/builtin"
 )
diff --git a/response.go b/response.go
index a95c9cd9..c471c75a 100644
--- a/response.go
+++ b/response.go
@@ -7,7 +7,6 @@ import (
 
 	"github.com/imroc/req"
 	"github.com/jmespath/go-jmespath"
-	"github.com/rs/zerolog/log"
 
 	"github.com/httprunner/hrp/builtin"
 )
diff --git a/runner.go b/runner.go
index f6b4d9c8..7ee289e6 100644
--- a/runner.go
+++ b/runner.go
@@ -2,19 +2,12 @@ package hrp
 
 import (
 	"net/http"
-	"os"
 	"testing"
 
 	"github.com/imroc/req"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog"
-	"github.com/rs/zerolog/log"
 )
 
-func init() {
-	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
-}
-
 // run API test with default configs
 func Run(t *testing.T, testcases ...ITestCase) error {
 	return NewRunner().WithTestingT(t).SetDebug(true).Run(testcases...)