diff --git a/APP_Framework/Applications/knowing_app/iris_ml_demo/DecisionTreeClassifierModel.h b/APP_Framework/Applications/knowing_app/iris_ml_demo/DecisionTreeClassifierModel.h
new file mode 100644
index 000000000..0fbf39d51
--- /dev/null
+++ b/APP_Framework/Applications/knowing_app/iris_ml_demo/DecisionTreeClassifierModel.h
@@ -0,0 +1,57 @@
+#include <stdarg.h>
+
+/**
+ * Predict class for features vector
+ */
+int predict(float *x)
+{
+    if (x[2] <= 2.449999988079071) {
+        return 0;
+    }
+
+    else {
+        if (x[3] <= 1.75) {
+            if (x[2] <= 4.950000047683716) {
+                if (x[3] <= 1.6500000357627869) {
+                    return 1;
+                }
+
+                else {
+                    return 2;
+                }
+            }
+
+            else {
+                if (x[3] <= 1.550000011920929) {
+                    return 2;
+                }
+
+                else {
+                    if (x[2] <= 5.450000047683716) {
+                        return 1;
+                    }
+
+                    else {
+                        return 2;
+                    }
+                }
+            }
+        }
+
+        else {
+            if (x[2] <= 4.8500001430511475) {
+                if (x[1] <= 3.100000023841858) {
+                    return 2;
+                }
+
+                else {
+                    return 1;
+                }
+            }
+
+            else {
+                return 2;
+            }
+        }
+    }
+}
diff --git a/APP_Framework/Applications/knowing_app/iris_ml_demo/iris_ml_demo.c b/APP_Framework/Applications/knowing_app/iris_ml_demo/iris_ml_demo.c
index 0e3eca404..d901f18c1 100644
--- a/APP_Framework/Applications/knowing_app/iris_ml_demo/iris_ml_demo.c
+++ b/APP_Framework/Applications/knowing_app/iris_ml_demo/iris_ml_demo.c
@@ -1,8 +1,6 @@
 #include <string.h>
 #include <transform.h>
 
-#include "SVCModel.h"
-
 #define FEATURE_NUM 4
 #define CSV_PATH "/csv/iris.csv"
 #define CSV_BUFFER_SIZE (1 * 1024)
@@ -41,6 +39,7 @@ void simple_CSV_read()
 
 void iris_SVC_predict()
 {
+#include "SVCModel.h"
     int result;
 
     simple_CSV_read();
@@ -57,3 +56,23 @@ void iris_SVC_predict()
 #ifdef __RT_THREAD_H__
 MSH_CMD_EXPORT(iris_SVC_predict, iris predict by SVC);
 #endif
+
+void iris_DecisonTree_predict()
+{
+#include "DecisionTreeClassifierModel.h"
+    int result;
+
+    simple_CSV_read();
+
+    for (int i = 0; i < data_len; i++) {
+        result = predict(data[i]);
+        printf("data %d: ", i + 1);
+        for (int j = 0; j < FEATURE_NUM; j++) {
+            printf("%.4f ", data[i][j]);
+        }
+        printf("result: %d\n", result);
+    }
+}
+#ifdef __RT_THREAD_H__
+MSH_CMD_EXPORT(iris_DecisonTree_predict, iris predict by decison tree classifier);
+#endif