diff --git a/go.mod b/go.mod
index 198dcf26..633c73b7 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/go-openapi/spec v0.20.6
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/websocket v1.4.1
-	github.com/httprunner/funplugin v0.4.8
+	github.com/httprunner/funplugin v0.4.9
 	github.com/jinzhu/copier v0.3.2
 	github.com/jmespath/go-jmespath v0.4.0
 	github.com/json-iterator/go v1.1.12
diff --git a/go.sum b/go.sum
index b3891bad..c10a45e2 100644
--- a/go.sum
+++ b/go.sum
@@ -255,6 +255,8 @@ github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
 github.com/httprunner/funplugin v0.4.8 h1:G785jrEn6EAEg2nwuPcCQUHBTgwgoaSz5qdQU4X3JpI=
 github.com/httprunner/funplugin v0.4.8/go.mod h1:vPyeJIfbpGe0epZZtAV0wCn16gLY9+imSw/zfxq0Lcc=
+github.com/httprunner/funplugin v0.4.9 h1:gmF1sP5D4/nvdocqgOAyT3GpVDz3fL4ErZ17WHo8x9U=
+github.com/httprunner/funplugin v0.4.9/go.mod h1:vPyeJIfbpGe0epZZtAV0wCn16gLY9+imSw/zfxq0Lcc=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/imkira/go-interpol v1.1.0/go.mod h1:z0h2/2T3XF8kyEPpRgJ3kmNv+C43p+I/CoI+jC3w2iA=
diff --git a/hrp/build.go b/hrp/build.go
index 4c5cb940..3184fa3c 100644
--- a/hrp/build.go
+++ b/hrp/build.go
@@ -44,6 +44,7 @@ type TemplateContent struct {
 	FromImports   []string // python from...import...
 	Functions     []string // python/go function
 	FunctionNames []string // function name set by user
+	Packages      []string // python packages
 }
 
 type Regexps struct {
@@ -127,8 +128,15 @@ func (t *TemplateContent) parsePyContent(path string) error {
 
 		if strings.HasPrefix(line, "import") {
 			t.Imports = append(t.Imports, strings.Trim(line, " "))
+			// e.g. import module as md
+			// import package.module
+			t.Packages = append(t.Packages, strings.Split(strings.Split(line, " ")[1], ".")[0])
 		} else if strings.HasPrefix(line, "from") {
 			t.FromImports = append(t.FromImports, strings.Trim(line, " "))
+			// e.g. from package.module import function
+			// from module import function
+			// from package import module
+			t.Packages = append(t.Packages, strings.Split(strings.Split(line, " ")[1], ".")[0])
 		} else {
 			// no parse content at under of `if __name__ == "__main__"`
 			if strings.HasPrefix(line, "if __name__") {
@@ -257,11 +265,24 @@ func buildPy(path string, output string) error {
 			FunctionName: regexp.MustCompile(regexPythonFunctionName),
 		},
 	}
+
 	err := templateContent.parsePyContent(path)
 	if err != nil {
 		return err
 	}
 
+	// ensure installation of packages
+	_, err = builtin.EnsurePython3Venv(templateContent.Packages...)
+	if err != nil {
+		return err
+	}
+
+	// check the syntax of debugtalk.py
+	err = builtin.CheckPythonScriptSyntax(path)
+	if err != nil {
+		return err
+	}
+
 	// generate .debugtalk_gen.py
 	if output == "" {
 		dir, _ := os.Getwd()
diff --git a/hrp/internal/builtin/utils.go b/hrp/internal/builtin/utils.go
index 8f3ca391..93a4b64b 100644
--- a/hrp/internal/builtin/utils.go
+++ b/hrp/internal/builtin/utils.go
@@ -103,6 +103,11 @@ func EnsurePython3Venv(packages ...string) (string, error) {
 	return python3, nil
 }
 
+func CheckPythonScriptSyntax(path string) error {
+	err := ExecCommand("python3", "-m", "py_compile", path)
+	return err
+}
+
 func ExecCommandInDir(cmd *exec.Cmd, dir string) error {
 	log.Info().Str("cmd", cmd.String()).Str("dir", dir).Msg("exec command")
 	cmd.Dir = dir
diff --git a/hrp/parameters.go b/hrp/parameters.go
index 13d1b679..ae8e1b9f 100644
--- a/hrp/parameters.go
+++ b/hrp/parameters.go
@@ -163,7 +163,7 @@ func (iter *ParametersIterator) Next() map[string]interface{} {
 
 	// merge with random parameters
 	for _, paramName := range iter.randomParameterNames {
-		randSource := rand.New(rand.NewSource(time.Now().Unix()))
+		randSource := rand.New(rand.NewSource(time.Now().UnixNano()))
 		randIndex := randSource.Intn(len(iter.data[paramName]))
 		for k, v := range iter.data[paramName][randIndex] {
 			selectedParameters[k] = v