diff --git a/internal/backend/remote-state/oss/backend.go b/internal/backend/remote-state/oss/backend.go
index cdc660bf6..2d488ce14 100644
--- a/internal/backend/remote-state/oss/backend.go
+++ b/internal/backend/remote-state/oss/backend.go
@@ -36,11 +36,10 @@ import (
 // Deprecated in favor of flattening assume_role_* options
 func deprecatedAssumeRoleSchema() *schema.Schema {
 	return &schema.Schema{
-		Type:          schema.TypeSet,
-		Optional:      true,
-		ConflictsWith: []string{"assume_role_role_arn", "assume_role_session_name", "assume_role_policy", "assume_role_session_expiration"},
-		MaxItems:      1,
-		Deprecated:    "use assume_role_* options instead",
+		Type:       schema.TypeSet,
+		Optional:   true,
+		MaxItems:   1,
+		Deprecated: "use assume_role_* options instead",
 		Elem: &schema.Resource{
 			Schema: map[string]*schema.Schema{
 				"role_arn": {
@@ -219,30 +218,26 @@ func New() backend.Backend {
 			},
 			"assume_role": deprecatedAssumeRoleSchema(),
 			"assume_role_role_arn": {
-				Type:          schema.TypeString,
-				Optional:      true,
-				ConflictsWith: []string{"assume_role"},
-				Description:   "The ARN of a RAM role to assume prior to making API calls.",
-				DefaultFunc:   schema.EnvDefaultFunc("ALICLOUD_ASSUME_ROLE_ARN", ""),
+				Type:        schema.TypeString,
+				Optional:    true,
+				Description: "The ARN of a RAM role to assume prior to making API calls.",
+				DefaultFunc: schema.EnvDefaultFunc("ALICLOUD_ASSUME_ROLE_ARN", ""),
 			},
 			"assume_role_session_name": {
-				Type:          schema.TypeString,
-				Optional:      true,
-				ConflictsWith: []string{"assume_role"},
-				Description:   "The session name to use when assuming the role.",
-				DefaultFunc:   schema.EnvDefaultFunc("ALICLOUD_ASSUME_ROLE_SESSION_NAME", ""),
+				Type:        schema.TypeString,
+				Optional:    true,
+				Description: "The session name to use when assuming the role.",
+				DefaultFunc: schema.EnvDefaultFunc("ALICLOUD_ASSUME_ROLE_SESSION_NAME", ""),
 			},
 			"assume_role_policy": {
-				Type:          schema.TypeString,
-				Optional:      true,
-				ConflictsWith: []string{"assume_role"},
-				Description:   "The permissions applied when assuming a role. You cannot use this policy to grant permissions which exceed those of the role that is being assumed.",
+				Type:        schema.TypeString,
+				Optional:    true,
+				Description: "The permissions applied when assuming a role. You cannot use this policy to grant permissions which exceed those of the role that is being assumed.",
 			},
 			"assume_role_session_expiration": {
-				Type:          schema.TypeInt,
-				Optional:      true,
-				ConflictsWith: []string{"assume_role"},
-				Description:   "The time after which the established session for assuming role expires.",
+				Type:        schema.TypeInt,
+				Optional:    true,
+				Description: "The time after which the established session for assuming role expires.",
 				ValidateFunc: func(v interface{}, k string) ([]string, []error) {
 					min := 900
 					max := 3600
@@ -324,7 +319,18 @@ func (b *Backend) configure(ctx context.Context) error {
 		sessionExpiration = (int)(expiredSeconds.(float64))
 	}
 
-	if v, ok := d.GetOk("assume_role"); ok {
+	if v, ok := d.GetOk("assume_role_role_arn"); ok && v.(string) != "" {
+		roleArn = v.(string)
+		if v, ok := d.GetOk("assume_role_session_name"); ok {
+			sessionName = v.(string)
+		}
+		if v, ok := d.GetOk("assume_role_policy"); ok {
+			policy = v.(string)
+		}
+		if v, ok := d.GetOk("assume_role_session_expiration"); ok {
+			sessionExpiration = v.(int)
+		}
+	} else if v, ok := d.GetOk("assume_role"); ok {
 		// deprecated assume_role block
 		for _, v := range v.(*schema.Set).List() {
 			assumeRole := v.(map[string]interface{})
@@ -337,11 +343,6 @@ func (b *Backend) configure(ctx context.Context) error {
 			policy = assumeRole["policy"].(string)
 			sessionExpiration = assumeRole["session_expiration"].(int)
 		}
-	} else {
-		roleArn = d.Get("assume_role_role_arn").(string)
-		sessionName = d.Get("assume_role_session_name").(string)
-		policy = d.Get("assume_role_policy").(string)
-		sessionExpiration = d.Get("assume_role_session_expiration").(int)
 	}
 
 	if sessionName == "" {
diff --git a/website/docs/language/settings/backends/oss.html.md b/website/docs/language/settings/backends/oss.html.md
index 698e41c46..e2a0adc12 100644
--- a/website/docs/language/settings/backends/oss.html.md
+++ b/website/docs/language/settings/backends/oss.html.md
@@ -98,11 +98,11 @@ The following configuration options or environment variables are supported:
 * `profile` - (Optional, Available in 0.12.8+)  This is the Alibaba Cloud profile name as set in the shared credentials file. It can also be sourced from the `ALICLOUD_PROFILE` environment variable.
 * `assume_role_role_arn` - (Optional, Available in 1.1.0+) The ARN of the role to assume. If ARN is set to an empty string, it does not perform role switching. It supports the environment variable `ALICLOUD_ASSUME_ROLE_ARN`.
   Terraform executes configuration on account with provided credentials.
-* `assume_role_policy` - (Optional, Available in 1.1.0+ A more restrictive policy to apply to the temporary credentials. This gives you a way to further restrict the permissions for the resulting temporary security credentials. You cannot use this policy to grant permissions that exceed those of the role that is being assumed.
+* `assume_role_policy` - (Optional, Available in 1.1.0+) A more restrictive policy to apply to the temporary credentials. This gives you a way to further restrict the permissions for the resulting temporary security credentials. You cannot use this policy to grant permissions that exceed those of the role that is being assumed.
 * `assume_role_session_name` - (Optional, Available in 1.1.0+) The session name to use when assuming the role. If omitted, 'terraform' is passed to the AssumeRole call as session name. It supports environment variable `ALICLOUD_ASSUME_ROLE_SESSION_NAME`.
-* `assume_role_session_expiration` - (Optional, Available in 1.1.0+ The time after which the established session for assuming role expires. Valid value range: [900-3600] seconds. Default to 3600 (in this case Alibaba Cloud uses its own default value). It supports environment variable `ALICLOUD_ASSUME_ROLE_SESSION_EXPIRATION`.
+* `assume_role_session_expiration` - (Optional, Available in 1.1.0+) The time after which the established session for assuming role expires. Valid value range: [900-3600] seconds. Default to 3600 (in this case Alibaba Cloud uses its own default value). It supports environment variable `ALICLOUD_ASSUME_ROLE_SESSION_EXPIRATION`.
 
-* `assume_role` - (**Deprecated as of 1.1.0+**, Available in 0.12.6+) If provided with a role ARN, will attempt to assume this role using the supplied credentials. 
+* `assume_role` - (**Deprecated as of 1.1.0+**, Available in 0.12.6+) If provided with a role ARN, will attempt to assume this role using the supplied credentials. It will be ignored when `assume_role_role_arn` is specified.
 
   **Deprecated in favor of flattening assume_role_\* options**