diff --git a/boomer.go b/boomer.go
index d196cc75..eae914ea 100644
--- a/boomer.go
+++ b/boomer.go
@@ -76,8 +76,10 @@ func (b *hrpBoomer) convertBoomerTask(testcase *TestCase) *boomer.Task {
 			if err := copier.Copy(caseConfig, cfg); err != nil {
 				log.Error().Err(err).Msg("copy config data failed")
 			}
-			if it := cfg.ParametersSetting.Iterator; it.HasNext() {
-				caseConfig.Variables = mergeVariables(it.Next(), caseConfig.Variables)
+			for _, it := range cfg.ParametersSetting.Iterator {
+				if it.HasNext() {
+					caseConfig.Variables = mergeVariables(it.Next(), caseConfig.Variables)
+				}
 			}
 			startTime := time.Now()
 			for index, step := range testcase.TestSteps {
diff --git a/examples/parameters_test.json b/examples/parameters_test.json
index e88cf8fb..61bc5ead 100644
--- a/examples/parameters_test.json
+++ b/examples/parameters_test.json
@@ -9,8 +9,11 @@
       "username-password": "${parameterize(examples/account.csv)}"
     },
     "parameters_setting": {
-      "strategy": "random",
-      "iteration": 1
+      "strategy": [
+        "random",
+        "sequential"
+      ],
+      "iteration": 10
     },
     "variables": {
       "app_version": "v1",
diff --git a/examples/parameters_test.yaml b/examples/parameters_test.yaml
index 9ef16dd1..412acaab 100644
--- a/examples/parameters_test.yaml
+++ b/examples/parameters_test.yaml
@@ -1,39 +1,38 @@
 config:
-    name: "request methods testcase: validate with parameters"
-    parameters:
-        user_agent: ["iOS/10.1", "iOS/10.2"]
-        username-password: ${parameterize(examples/account.csv)}
-    parameters_setting:
-        strategy: random
-        iteration: 1
-    variables:
-        app_version: v1
-        user_agent: iOS/10.3
-    base_url: "https://postman-echo.com"
-    verify: False
+  name: "request methods testcase: validate with parameters"
+  parameters:
+    user_agent: [ "iOS/10.1", "iOS/10.2" ]
+    username-password: ${parameterize(examples/account.csv)}
+  parameters_setting:
+    strategy: ["random", "sequential"]
+    iteration: 10
+  variables:
+    app_version: v1
+    user_agent: iOS/10.3
+  base_url: "https://postman-echo.com"
+  verify: False
 
 teststeps:
--
-    name: get with params
+  - name: get with params
     variables:
-        foo1: $username
-        foo2: $password
-        foo3: $user_agent
+      foo1: $username
+      foo2: $password
+      foo3: $user_agent
     request:
-        method: GET
-        url: /get
-        params:
-            foo1: $foo1
-            foo2: $foo2
-            foo3: $foo3
-        headers:
-            User-Agent: $user_agent,$app_version
+      method: GET
+      url: /get
+      params:
+        foo1: $foo1
+        foo2: $foo2
+        foo3: $foo3
+      headers:
+        User-Agent: $user_agent,$app_version
     validate:
-        - check: status_code
-          assert: equals
-          expect: 200
-          msg: check status code
-        - check: body.args.foo3
-          assert: not_equal
-          expect: iOS/10.3
-          msg: check app version
\ No newline at end of file
+      - check: status_code
+        assert: equals
+        expect: 200
+        msg: check status code
+      - check: body.args.foo3
+        assert: not_equal
+        expect: iOS/10.3
+        msg: check app version
\ No newline at end of file
diff --git a/models.go b/models.go
index 880d6756..839234e8 100644
--- a/models.go
+++ b/models.go
@@ -30,9 +30,9 @@ type TConfig struct {
 }
 
 type TParamsConfig struct {
-	Strategy  string    `json:"strategy,omitempty" yaml:"strategy,omitempty"`
-	Iteration int       `json:"iteration,omitempty" yaml:"iteration,omitempty"`
-	Iterator  *Iterator `json:"parameterIterator,omitempty" yaml:"parameterIterator,omitempty"`
+	Strategy  interface{} `json:"strategy,omitempty" yaml:"strategy,omitempty"`
+	Iteration int         `json:"iteration,omitempty" yaml:"iteration,omitempty"`
+	Iterator  []*Iterator `json:"parameterIterator,omitempty" yaml:"parameterIterator,omitempty"`
 }
 
 const (
@@ -68,7 +68,6 @@ func (iter *Iterator) HasNext() bool {
 func (iter *Iterator) Next() (value map[string]interface{}) {
 	iter.Lock()
 	defer iter.Unlock()
-	iter.index++
 	if len(iter.data) == 0 {
 		return map[string]interface{}{}
 	}
@@ -79,6 +78,7 @@ func (iter *Iterator) Next() (value map[string]interface{}) {
 	} else {
 		value = iter.data[iter.index%len(iter.data)]
 	}
+	iter.index++
 	return value
 }
 
diff --git a/parser.go b/parser.go
index 9cd49a00..0a337f37 100644
--- a/parser.go
+++ b/parser.go
@@ -494,14 +494,14 @@ func findallVariables(raw string) variableSet {
 	return varSet
 }
 
-func genCartesianProduct(params [][]map[string]interface{}) []map[string]interface{} {
+func genCartesianProduct(params []paramsType) paramsType {
 	if len(params) == 0 {
 		return nil
 	}
-	var cartesianProduct []map[string]interface{}
+	var cartesianProduct paramsType
 	cartesianProduct = params[0]
 	for i := 0; i < len(params)-1; i++ {
-		var tempProduct []map[string]interface{}
+		var tempProduct paramsType
 		for _, param1 := range cartesianProduct {
 			for _, param2 := range params[i+1] {
 				tempProduct = append(tempProduct, mergeVariables(param1, param2))
@@ -512,14 +512,14 @@ func genCartesianProduct(params [][]map[string]interface{}) []map[string]interfa
 	return cartesianProduct
 }
 
-func parseParameters(parameters map[string]interface{}, variablesMapping map[string]interface{}) ([]map[string]interface{}, error) {
+func parseParameters(parameters map[string]interface{}, variablesMapping map[string]interface{}) ([]paramsType, error) {
 	if len(parameters) == 0 {
 		return nil, nil
 	}
-	var parsedParametersSlice [][]map[string]interface{}
+	var parsedParametersSlice []paramsType
 	var err error
 	for k, v := range parameters {
-		var parameterSlice []map[string]interface{}
+		var parameterSlice paramsType
 		rawValue := reflect.ValueOf(v)
 		switch rawValue.Kind() {
 		case reflect.String:
@@ -548,7 +548,7 @@ func parseParameters(parameters map[string]interface{}, variablesMapping map[str
 		}
 		parsedParametersSlice = append(parsedParametersSlice, parameterSlice)
 	}
-	return genCartesianProduct(parsedParametersSlice), nil
+	return parsedParametersSlice, nil
 }
 
 func parseSlice(parameterName string, parameterContent interface{}) ([]map[string]interface{}, error) {
@@ -599,31 +599,54 @@ func parseSlice(parameterName string, parameterContent interface{}) ([]map[strin
 }
 
 func initParameterIterator(cfg *TConfig, mode string) (err error) {
-	var parameters paramsType
+	var parameters []paramsType
 	parameters, err = parseParameters(cfg.Parameters, cfg.Variables)
-	// parse config parameters setting
-	if cfg.ParametersSetting == nil {
-		cfg.ParametersSetting = &TParamsConfig{Iterator: &Iterator{}}
-	}
-	cfg.ParametersSetting.Iterator = parameters.Iterator()
 	if err != nil {
 		return err
 	}
-	if len(cfg.ParametersSetting.Strategy) == 0 {
-		cfg.ParametersSetting.Strategy = strategySequential
-	} else {
-		cfg.ParametersSetting.Strategy = strings.ToLower(cfg.ParametersSetting.Strategy)
+	// parse config parameters setting
+	if cfg.ParametersSetting == nil {
+		cfg.ParametersSetting = &TParamsConfig{Iterator: []*Iterator{}}
 	}
-	cfg.ParametersSetting.Iterator.strategy = cfg.ParametersSetting.Strategy
 	if mode == "boomer" {
 		cfg.ParametersSetting.Iteration = -1
-		cfg.ParametersSetting.Iterator.iteration = cfg.ParametersSetting.Iteration
-	} else {
-		if cfg.ParametersSetting.Iteration > 0 {
-			cfg.ParametersSetting.Iterator.iteration = cfg.ParametersSetting.Iteration
-		} else if cfg.ParametersSetting.Iterator.iteration == 0 {
-			cfg.ParametersSetting.Iterator.iteration = 1
+	}
+	rawValue := reflect.ValueOf(cfg.ParametersSetting.Strategy)
+	switch rawValue.Kind() {
+	case reflect.String:
+		if len(rawValue.String()) == 0 {
+			cfg.ParametersSetting.Strategy = strategySequential
+		} else {
+			cfg.ParametersSetting.Strategy = strings.ToLower(rawValue.String())
+		}
+		cfg.ParametersSetting.Iterator = append(
+			cfg.ParametersSetting.Iterator,
+			newIterator(genCartesianProduct(parameters), cfg.ParametersSetting.Strategy.(string), cfg.ParametersSetting.Iteration),
+		)
+	case reflect.Slice:
+		if len(parameters) != rawValue.Len() {
+			return errors.New("parameters and strategy should have the same length")
+		} else {
+			for i := 0; i < rawValue.Len(); i++ {
+				cfg.ParametersSetting.Iterator = append(
+					cfg.ParametersSetting.Iterator,
+					newIterator(parameters[i], rawValue.Index(i).Interface().(string), cfg.ParametersSetting.Iteration),
+				)
+			}
 		}
 	}
 	return nil
 }
+
+func newIterator(parameters paramsType, strategy string, iteration int) *Iterator {
+	it := parameters.Iterator()
+	it.strategy = strategy
+	if iteration > 0 {
+		it.iteration = iteration
+	} else if it.iteration == 0 {
+		it.iteration = 1
+	} else {
+		it.iteration = -1
+	}
+	return it
+}
diff --git a/runner.go b/runner.go
index df33b966..d8f7543d 100644
--- a/runner.go
+++ b/runner.go
@@ -143,8 +143,12 @@ func (r *caseRunner) run() error {
 	}
 	cfg := config.ToStruct()
 	log.Info().Str("testcase", config.Name()).Msg("run testcase start")
-	for it := cfg.ParametersSetting.Iterator; it.HasNext(); {
-		cfg.Variables = mergeVariables(it.Next(), cfg.Variables)
+	for it := cfg.ParametersSetting.Iterator[0]; it.HasNext(); {
+		for _, it = range cfg.ParametersSetting.Iterator {
+			if it.HasNext() {
+				cfg.Variables = mergeVariables(it.Next(), cfg.Variables)
+			}
+		}
 		r.startTime = time.Now()
 		for index := range r.TestCase.TestSteps {
 			_, err := r.runStep(index, cfg)