diff --git a/README.md b/README.md
index 57a4a3a..1b51908 100644
--- a/README.md
+++ b/README.md
@@ -160,12 +160,15 @@
 
 <details>
 
-<summary>metrics linear [--start=start-time] [--end=end-time] --name=metrics-name --service=service-name</summary>
+<summary>metrics linear [--start=start-time] [--end=end-time] --name=metrics-name --service=service-name [--instance=instance-name] [--endpoint=endpoint-name] [--isNormal=true/false]</summary>
 
 | option | description | default |
 | :--- | :--- | :--- |
 | `--name` | Metrics name, defined in [OAL](https://github.com/apache/skywalking/blob/master/oap-server/server-bootstrap/src/main/resources/oal/core.oal). |
 | `--service` | The name of the service. | "" |
+| `--instance` | The name of the service instance. | "" |
+| `--endpoint` | The name of the endpoint. | "" |
+| `--isNormal` | Set the service to normal or unnormal. | `true` |
 | `--start` | See [Common options](#common-options) | See [Common options](#common-options) |
 | `--end` | See [Common options](#common-options) | See [Common options](#common-options) |
 
@@ -175,13 +178,16 @@
 
 <details>
 
-<summary>metrics multiple-linear [--start=start-time] [--end=end-time] --name=metrics-name [--service=service-name] [--num=number-of-linear-metrics]</summary>
+<summary>metrics multiple-linear [--start=start-time] [--end=end-time] --name=metrics-name [--service=service-name] [--num=number-of-linear-metrics] [--instance=instance-name] [--endpoint=endpoint-name] [--isNormal=true/false]</summary>
 
 | option | description | default |
 | :--- | :--- | :--- |
 | `--name` | Metrics name that ends with `_percentile`, defined in [OAL](https://github.com/apache/skywalking/blob/master/oap-server/server-bootstrap/src/main/resources/oal/core.oal), such as `all_percentile`, etc. |
 | `--service` | The name of the service, when scope is `All`, no name is required. | "" |
-| `--num` | Number of the linear metrics to fetch | `5` |
+| `--labels` | The labels you need to query | `0,1,2,3,4` |
+| `--instance` | The name of the service instance. | "" |
+| `--endpoint` | The name of the endpoint. | "" |
+| `--isNormal` | Set the service to normal or unnormal. | `true` |
 | `--start` | See [Common options](#common-options) | See [Common options](#common-options) |
 | `--end` | See [Common options](#common-options) | See [Common options](#common-options) |
 
@@ -191,12 +197,15 @@
 
 <details>
 
-<summary>metrics single [--start=start-time] [--end=end-time] --name=metrics-name --service=service-name</summary>
+<summary>metrics single [--start=start-time] [--end=end-time] --name=metrics-name --service=service-name [--instance=instance-name] [--endpoint=endpoint-name] [--isNormal=true/false]</summary>
 
 | option | description | default |
 | :--- | :--- | :--- |
 | `--name` | Metrics name, defined in [OAL](https://github.com/apache/skywalking/blob/master/oap-server/server-bootstrap/src/main/resources/oal/core.oal), such as `service_sla`, etc. |
 | `--service` | The name of the service. | "" |
+| `--instance` | The name of the service instance. | "" |
+| `--endpoint` | The name of the endpoint. | "" |
+| `--isNormal` | Set the service to normal or unnormal. | `true` |
 | `--start` | See [Common options](#common-options) | See [Common options](#common-options) |
 | `--end` | See [Common options](#common-options) | See [Common options](#common-options) |
 
@@ -206,7 +215,7 @@
 
 <details>
 
-<summary>metrics top 5 [--start=start-time] [--end=end-time] --name=metrics-name [--service=parent-service] [--order=DES]</summary>
+<summary>metrics top 5 [--start=start-time] [--end=end-time] --name=metrics-name [--service=parent-service] [--order=DES] [--isNormal=true/false]</summary>
 
 | option | description | default |
 | :--- | :--- | :--- |
@@ -214,6 +223,7 @@
 | `--name` | Metrics name, defined in [OAL](https://github.com/apache/skywalking/blob/master/oap-server/server-bootstrap/src/main/resources/oal/core.oal), such as `service_sla`, etc. |
 | `--service` | The name of the parent service, could be null if query the global top N. | "" |
 | `--order` | The order of metrics, `DES` or `ASC`. |`DES`|
+| `--isNormal` | Set the service to normal or unnormal. | `true` |
 | `--start` | See [Common options](#common-options) | See [Common options](#common-options) |
 | `--end` | See [Common options](#common-options) | See [Common options](#common-options) |
 
@@ -389,7 +399,7 @@
 <summary>Query a linear metrics graph for an instance</summary>
 
 ```shell
-$ ./bin/swctl --display=graph metrics linear --name=service_instance_resp_time --service "load balancer1.system"
+$ ./bin/swctl --display=graph metrics linear --name=service_instance_resp_time --service "projectC.business-zone" --instance "5ca1e1be91064db6880abac4648667ff@192.168.252.13"
 ```
 
 ![](http://skywalking.apache.org/screenshots/cli/metrics-linear.png)
@@ -407,19 +417,34 @@
 <summary>Query a single metrics value for a specific endpoint</summary>
 
 ```shell
-$ ./bin/swctl service ls projectC | jq '.[0].id' | xargs ./bin/swctl endpoint ls --service-id | jq '.[] | [.id] | join(",")' | xargs ./bin/swctl metrics single --name endpoint_cpm --ids
-[{"id":"22","value":116}]
+export SERVICE_NAME=projectC.business-zone
+export ENDPOINT=/projectC/{value}
+export METRICS_NAME=endpoint_cpm
+./bin/swctl metrics single --name ${METRICS_NAME} --service ${SERVICE_NAME} --endpoint ${ENDPOINT}
+```
+
+Result:
+
+```
+23
 ```
 
 </details>
 
 <details>
 
-<summary>Query metrics single values for all endpoints of service of id 3</summary>
+<summary>Query metrics single values for all endpoints of service `projectC.business-zone`</summary>
 
 ```shell
-$ ./bin/swctl service ls projectC | jq '.[0].id' | xargs ./bin/swctl endpoint ls --service-id | jq '.[] | [.id] | join(",")' | xargs ./bin/swctl metrics single --name endpoint_cpm --end='2019-12-02 2137' --ids
-[{"id":"3","value":116}]
+export SERVICE_NAME=projectC.business-zone
+export METRICS_NAME=endpoint_cpm
+./bin/swctl endpoint ls --service-id=$(./bin/swctl service ls "$SERVICE_NAME" | jq -r '.[0].id') | jq -r '.[].name' | xargs ./bin/swctl metrics single --name "${METRICS_NAME}" --service "${SERVICE_NAME}" --endpoint
+```
+
+Result:
+
+```
+23
 ```
 
 </details>
diff --git a/commands/flags/metrics.go b/commands/flags/metrics.go
index b1bcfb2..151c4ae 100644
--- a/commands/flags/metrics.go
+++ b/commands/flags/metrics.go
@@ -34,4 +34,21 @@
 		Value:    "",
 		Required: false,
 	},
+	cli.StringFlag{
+		Name:     "instance",
+		Usage:    "the name of service instance",
+		Value:    "",
+		Required: false,
+	},
+	cli.StringFlag{
+		Name:     "endpoint",
+		Usage:    "the name of endpoint",
+		Value:    "",
+		Required: false,
+	},
+	cli.BoolTFlag{
+		Name:     "isNormal",
+		Usage:    "set the service to normal or unnormal",
+		Required: false,
+	},
 }
diff --git a/commands/interceptor/scope.go b/commands/interceptor/scope.go
index d7c84e8..6ecd7bc 100644
--- a/commands/interceptor/scope.go
+++ b/commands/interceptor/scope.go
@@ -33,7 +33,7 @@
 		ret = schema.ScopeServiceInstanceRelation
 	} else if strings.HasPrefix(name, "service_instance") {
 		ret = schema.ScopeServiceInstance
-	} else if strings.HasPrefix(name, "service_") {
+	} else if strings.HasPrefix(name, "service_") || strings.HasPrefix(name, "database_") {
 		ret = schema.ScopeService
 	} else if strings.HasPrefix(name, "endpoint_relation") {
 		ret = schema.ScopeEndpointRelation
diff --git a/commands/metrics/aggregation/topn.go b/commands/metrics/aggregation/topn.go
index 183ec05..0745691 100644
--- a/commands/metrics/aggregation/topn.go
+++ b/commands/metrics/aggregation/topn.go
@@ -61,7 +61,7 @@
 		step := ctx.Generic("step").(*model.StepEnumValue).Selected
 
 		metricsName := ctx.String("name")
-		normal := true
+		normal := ctx.BoolT("isNormal")
 		scope := interceptor.ParseScope(metricsName)
 		order := ctx.Generic("order").(*model.OrderEnumValue).Selected
 		topN := 5
diff --git a/commands/metrics/linear/linear-metrics.go b/commands/metrics/linear/linear-metrics.go
index a684781..36711c3 100644
--- a/commands/metrics/linear/linear-metrics.go
+++ b/commands/metrics/linear/linear-metrics.go
@@ -50,7 +50,9 @@
 
 		metricsName := ctx.String("name")
 		serviceName := ctx.String("service")
-		normal := true
+		normal := ctx.BoolT("isNormal")
+		instanceName := ctx.String("instance")
+		endpointName := ctx.String("endpoint")
 		scope := interceptor.ParseScope(metricsName)
 
 		if serviceName == "" {
@@ -72,7 +74,8 @@
 				Scope:               scope,
 				ServiceName:         &serviceName,
 				Normal:              &normal,
-				ServiceInstanceName: &serviceName,
+				ServiceInstanceName: &instanceName,
+				EndpointName:        &endpointName,
 			},
 		}, duration)
 
diff --git a/commands/metrics/linear/multiple-linear-metrics.go b/commands/metrics/linear/multiple-linear-metrics.go
index 9c8bd3b..e9ded0d 100644
--- a/commands/metrics/linear/multiple-linear-metrics.go
+++ b/commands/metrics/linear/multiple-linear-metrics.go
@@ -19,6 +19,7 @@
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/apache/skywalking-cli/commands/flags"
 	"github.com/apache/skywalking-cli/commands/interceptor"
@@ -39,11 +40,11 @@
 		flags.DurationFlags,
 		flags.MetricsFlags,
 		[]cli.Flag{
-			cli.IntFlag{
-				Name:     "num",
-				Usage:    "`num`, the number of linear metrics to query, (default: 5)",
+			cli.StringFlag{
+				Name:     "labels",
+				Usage:    "the labels you need to query",
 				Required: false,
-				Value:    5,
+				Value:    "0,1,2,3,4",
 			},
 		},
 	),
@@ -58,23 +59,16 @@
 
 		metricsName := ctx.String("name")
 		serviceName := ctx.String("service")
-		normal := true
-		numOfLinear := ctx.Int("num")
+		normal := ctx.BoolT("isNormal")
+		instanceName := ctx.String("instance")
+		endpointName := ctx.String("endpoint")
+		labels := ctx.String("labels")
 		scope := interceptor.ParseScope(metricsName)
 
 		if serviceName == "" && scope != schema.ScopeAll {
 			return fmt.Errorf("the name of service should be specified when metrics' scope is not `All`")
 		}
 
-		if numOfLinear > 5 || numOfLinear < 1 {
-			numOfLinear = 5
-		}
-
-		var labels []string
-		for i := 0; i < numOfLinear; i++ {
-			labels = append(labels, fmt.Sprintf("%d", i))
-		}
-
 		duration := schema.Duration{
 			Start: start,
 			End:   end,
@@ -84,11 +78,13 @@
 		metricsValuesArray := metrics.MultipleLinearIntValues(ctx, schema.MetricsCondition{
 			Name: metricsName,
 			Entity: &schema.Entity{
-				Scope:       scope,
-				ServiceName: &serviceName,
-				Normal:      &normal,
+				Scope:               scope,
+				ServiceName:         &serviceName,
+				Normal:              &normal,
+				ServiceInstanceName: &instanceName,
+				EndpointName:        &endpointName,
 			},
-		}, labels, duration)
+		}, strings.Split(labels, ","), duration)
 
 		reshaped := utils.MetricsValuesArrayToMap(duration, metricsValuesArray)
 		return display.Display(ctx, &displayable.Displayable{Data: reshaped})
diff --git a/commands/metrics/list/list-metrics.go b/commands/metrics/list/list-metrics.go
index f163fb7..8b22349 100644
--- a/commands/metrics/list/list-metrics.go
+++ b/commands/metrics/list/list-metrics.go
@@ -26,8 +26,9 @@
 )
 
 var Command = cli.Command{
-	Name:  "list",
-	Usage: "List metrics that could be queried",
+	Name:      "list",
+	ShortName: "ls",
+	Usage:     "List metrics that could be queried",
 	Flags: []cli.Flag{
 		cli.StringFlag{
 			Name:  "regex",
diff --git a/commands/metrics/single/single-metrics.go b/commands/metrics/single/single-metrics.go
index 2d92cca..d407fa4 100644
--- a/commands/metrics/single/single-metrics.go
+++ b/commands/metrics/single/single-metrics.go
@@ -49,7 +49,9 @@
 
 		metricsName := ctx.String("name")
 		serviceName := ctx.String("service")
-		normal := true
+		normal := ctx.BoolT("isNormal")
+		instanceName := ctx.String("instance")
+		endpointName := ctx.String("endpoint")
 		scope := interceptor.ParseScope(metricsName)
 
 		if serviceName == "" {
@@ -68,9 +70,11 @@
 		metricsValue := metrics.IntValues(ctx, schema.MetricsCondition{
 			Name: metricsName,
 			Entity: &schema.Entity{
-				Scope:       scope,
-				ServiceName: &serviceName,
-				Normal:      &normal,
+				Scope:               scope,
+				ServiceName:         &serviceName,
+				Normal:              &normal,
+				ServiceInstanceName: &instanceName,
+				EndpointName:        &endpointName,
 			},
 		}, duration)
 
diff --git a/docs/How-to-release.md b/docs/How-to-release.md
index 6980e71..db56647 100644
--- a/docs/How-to-release.md
+++ b/docs/How-to-release.md
@@ -215,11 +215,9 @@
     Website: http://skywalking.apache.org/
 
     SkyWalking CLI Resources:
-- Issue: https://github.com/apache/skywalking/issues
+    - Issue: https://github.com/apache/skywalking/issues
     - Mailing list: dev@skywalking.apache.org
     - Documents: https://github.com/apache/skywalking-cli/blob/$VERSION/README.md
     
     The Apache SkyWalking Team
-```
-    
-    
+    ```