diff --git a/README.md b/README.md
index 0c72dc2cddaf1c25ca453893936fb74171f25430..2d7a3d2d2f4c4cbda379802314e1aa0ede7bbe7c 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,10 @@ Todo:
  -  Evaluate API
     - [ ] Average Method Length
     - [ ] Average Class Method Count
+ - Date Collections
+    - [ ] monolithic
+    - [ ] microservice 
+    - [ ] big data
 
 ## Usage
 
diff --git a/cmd/api.go b/cmd/api.go
index 0d97ce3947252198c179283c8d850e403bc45458..ca8e9ae7cb986042bcd13b85908e43d27d88aade 100644
--- a/cmd/api.go
+++ b/cmd/api.go
@@ -1,14 +1,14 @@
 package cmd
 
 import (
+	"encoding/json"
+	"github.com/olekukonko/tablewriter"
 	"github.com/phodal/coca/config"
 	"github.com/phodal/coca/core/adapter"
 	. "github.com/phodal/coca/core/adapter/api"
 	"github.com/phodal/coca/core/domain/call_graph"
 	"github.com/phodal/coca/core/models"
 	. "github.com/phodal/coca/core/support"
-	"encoding/json"
-	"github.com/olekukonko/tablewriter"
 	"github.com/spf13/cobra"
 	"log"
 	"os"
@@ -31,11 +31,11 @@ type ApiCmdConfig struct {
 
 var (
 	apiCmdConfig ApiCmdConfig
-	restApis []RestApi
+	restApis     []RestApi
 
-	identifiers = adapter.LoadIdentify(apiCmdConfig.DependencePath)
+	identifiers    = adapter.LoadIdentify(apiCmdConfig.DependencePath)
 	identifiersMap = adapter.BuildIdentifierMap(identifiers)
-	diMap = adapter.BuildDIMap(identifiers, identifiersMap)
+	diMap          = adapter.BuildDIMap(identifiers, identifiersMap)
 )
 
 var apiCmd = &cobra.Command{
diff --git a/cmd/evaluate.go b/cmd/evaluate.go
index f3fd18aa3306b9fe6ea2758167aa1077daf1b32d..4296cf538bc4cd3ea0e25c64bceac2f08678ea55 100644
--- a/cmd/evaluate.go
+++ b/cmd/evaluate.go
@@ -61,6 +61,12 @@ var evaluateCmd = &cobra.Command{
 		staticCount := result.Summary.StaticMethodCount
 		table.Append([]string{"Static Method", strconv.Itoa(staticCount), "Method", strconv.Itoa(methodCount), Percent(utilsCount, methodCount)})
 
+		table.Append([]string{"Average Method Num", strconv.Itoa(methodCount), "Method/Class", strconv.Itoa(classCount), Rate(methodCount, classCount)})
+
+		totalLength := result.Summary.TotalMethodLength
+		normalMethodCount := result.Summary.NormalMethodCount
+		table.Append([]string{"Average Method Length", strconv.Itoa(totalLength), "Without Getter/Setter", strconv.Itoa(normalMethodCount), Rate(totalLength, normalMethodCount)})
+
 		table.Render()
 	},
 }
@@ -70,6 +76,11 @@ func Percent(pcent int, all int) string {
 	return fmt.Sprintf("%3.2f%%", percent)
 }
 
+func Rate(pcent int, all int) string {
+	percent := float64(pcent) / float64(all)
+	return fmt.Sprintf("%f", percent)
+}
+
 func init() {
 	rootCmd.AddCommand(evaluateCmd)
 
diff --git a/core/domain/evaluate/analyser.go b/core/domain/evaluate/analyser.go
index 5adb0cbc76ce1b17c863a925ba8c4efa63f0f7e8..f075f98918dd6aa7eb192b66ba68e016459ebd34 100644
--- a/core/domain/evaluate/analyser.go
+++ b/core/domain/evaluate/analyser.go
@@ -46,6 +46,11 @@ func (a Analyser) Analysis(classNodes []models.JClassNode, identifiers []models.
 			if support.Contains(method.Modifiers, "static") {
 				result.Summary.StaticMethodCount++
 			}
+
+			if !strings.HasPrefix(method.Name, "set") && !strings.HasPrefix(method.Name, "get") {
+				result.Summary.NormalMethodCount++
+				result.Summary.TotalMethodLength = result.Summary.TotalMethodLength + method.StopLine - method.StartLine + 1
+			}
 		}
 	}
 
diff --git a/core/domain/evaluate/evaluator/models.go b/core/domain/evaluate/evaluator/models.go
index d358327381f85d484a17143c4623520ec811f388..d90410f7ec2e16f733f861dcc1c001985566464e 100644
--- a/core/domain/evaluate/evaluator/models.go
+++ b/core/domain/evaluate/evaluator/models.go
@@ -20,6 +20,8 @@ type Summary struct {
 	UtilsCount        int
 	ClassCount        int
 	MethodCount       int
+	NormalMethodCount int
+	TotalMethodLength int
 	StaticMethodCount int
 }
 
diff --git a/docs/patterns/evaluate.md b/docs/patterns/evaluate.md
new file mode 100644
index 0000000000000000000000000000000000000000..23791777ed3144719246f60298bb6d2dd3d63e72
--- /dev/null
+++ b/docs/patterns/evaluate.md
@@ -0,0 +1,116 @@
+url: https://github.com/macrozheng/mall
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |    22 | Method                | 12682 | 0.17%     |
+| Utils                  |     2 | Class                 |   458 | 0.44%     |
+| Static Method          |     7 | Method                | 12682 | 0.02%     |
+| Average Method Num     | 12682 | Method/Class          |   458 | 27.689956 |
+| Average Method Length  | 45091 | Without Getter/Setter | 10205 |  4.418520 |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// issues: big data class / god service 
+
+url: https://github.com/shuzheng/zheng
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |     0 | Method                |  5256 | 0.00%     |
+| Utils                  |    18 | Class                 |   366 | 4.92%     |
+| Static Method          |     0 | Method                |  5256 | 0.34%     |
+| Average Method Num     |  5256 | Method/Class          |   366 | 14.360656 |
+| Average Method Length  | 19644 | Without Getter/Setter |  4328 |  4.538817 |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// data class
+
+big data
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |   128 | Method                |  3041 | 4.21%     |
+| Utils                  |    18 | Class                 |   496 | 7.06%     |
+| Static Method          |   400 | Method                |  3041 | 1.15%     |
+| Average Method Num     |  3041 | Method/Class          |   496 | 6.13      |
+| Average Method Length  | 17730 | Without Getter/Setter |  1551 | 11.43     |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// null issues
+
+Common Project
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |   234 | Method                | 16642 | 1.41%     |
+| Utils                  |    26 | Class                 |  1007 | 7.06%     |
+| Static Method          |  2062 | Method                | 16642 | 0.16%     |
+| Average Method Num     | 16642 | Method/Class          |  1007 | 16.52     |
+| Average Method Length  | 69012 | Without Getter/Setter |  6020 | 11.46     |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// static projects
+
+Algo Project
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |   101 | Method                |  4914 | 2.06%     |
+| Utils                  |    43 | Class                 |   926 | 4.64%     |
+| Static Method          |  542  | Method                |  4914 | 0.88%     |
+| Average Method Num     | 4914  | Method/Class          |   927 | 5.30      |
+| Average Method Length  | 51056 | Without Getter/Setter |  2603 | 19.61     |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// longest method
+
+CMS
+
+url: https://github.com/sanluan/PublicCMS
+
+```
++------------------------+-------+-----------------------+-------+-----------+
+|          TYPE          | COUNT |         LEVEL         | TOTAL |   RATE    |
++------------------------+-------+-----------------------+-------+-----------+
+| Nullable / Return Null |   131 | Method                |  2707 | 4.84%     |
+| Utils                  |    21 | Class                 |   483 | 4.35%     |
+| Static Method          |   246 | Method                |  2707 | 0.78%     |
+| Average Method Num     |  2707 | Method/Class          |   483 |  5.604555 |
+| Average Method Length  | 13622 | Without Getter/Setter |  1350 | 10.090370 |
++------------------------+-------+-----------------------+-------+-----------+
+```
+
+// to many null
+
+ERP
+
+url: https://github.com/ilscipio/scipio-erp
+
+```
++------------------------+--------+-----------------------+-------+-----------+
+|          TYPE          | COUNT  |         LEVEL         | TOTAL |   RATE    |
++------------------------+--------+-----------------------+-------+-----------+
+| Nullable / Return Null |   1660 | Method                | 23461 | 7.08%     |
+| Utils                  |     86 | Class                 |  2288 | 3.76%     |
+| Static Method          |   6469 | Method                | 23461 | 0.37%     |
+| Average Method Num     |  23461 | Method/Class          |  2288 | 10.253934 |
+| Average Method Length  | 228550 | Without Getter/Setter | 14080 | 16.232244 |
++------------------------+--------+-----------------------+-------+-----------+
+```
+
+// longest method
+// to many null (bugs)
\ No newline at end of file