diff --git a/modelcenter/PP-HumanV2/introduction_cn.ipynb b/modelcenter/PP-HumanV2/introduction_cn.ipynb
index 05386cdcd43c323f17340761f6c6b4515dc34101..7b9b81a17d60c9016b1634a34fada940294158c9 100644
--- a/modelcenter/PP-HumanV2/introduction_cn.ipynb
+++ b/modelcenter/PP-HumanV2/introduction_cn.ipynb
@@ -270,7 +270,7 @@
     "PP-Human 整体方案如下图所示:\n",
     "\n",
     "<div width=\"1000\" align=\"center\">\n",
-    "  <img src=\"pphumanv2.png\"/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/pphumanv2.png\"/>\n",
     "</div>\n",
     "\n",
     "### 行人检测\n",
diff --git a/modelcenter/PP-HumanV2/introduction_en.ipynb b/modelcenter/PP-HumanV2/introduction_en.ipynb
index fbe8b6eadc687b1c56c5ef2fdecc2bbda3249e07..479bf19225ae6ec72a237bb0e8767c3e4385c3ec 100644
--- a/modelcenter/PP-HumanV2/introduction_en.ipynb
+++ b/modelcenter/PP-HumanV2/introduction_en.ipynb
@@ -247,7 +247,7 @@
     "The overall solution for PP-Human is shown in the graph below:\n",
     "\n",
     "<div width=\"1000\" align=\"center\">\n",
-    "  <img src=\"pphumanv2.png\"/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/pphumanv2.png\"/>\n",
     "</div>\n",
     "\n",
     "### Pedestrian detection\n",
diff --git a/modelcenter/PP-TinyPose/introduction_cn.ipynb b/modelcenter/PP-TinyPose/introduction_cn.ipynb
index 14b8be6cb8aa0868b6e97878583ab6b212390522..5929c506087c305440136974af409a59db958528 100644
--- a/modelcenter/PP-TinyPose/introduction_cn.ipynb
+++ b/modelcenter/PP-TinyPose/introduction_cn.ipynb
@@ -245,7 +245,7 @@
    "source": [
     "## 4. 方案介绍\n",
     "<div align=\"center\">\n",
-    "  <img src=\"tinypose_pipeline.png\" width='800'/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/tinypose_pipeline.png\" width='800'/>\n",
     "</div>"
    ]
   }
diff --git a/modelcenter/PP-TinyPose/introduction_en.ipynb b/modelcenter/PP-TinyPose/introduction_en.ipynb
index c93aa333ccccdee3609f5628dc9cdbc51ecfbf9e..72618d9c27465cc2c9895676de2aed28617b3f39 100644
--- a/modelcenter/PP-TinyPose/introduction_en.ipynb
+++ b/modelcenter/PP-TinyPose/introduction_en.ipynb
@@ -231,7 +231,7 @@
    "source": [
     "## 4. Solution\n",
     "<div align=\"center\">\n",
-    "  <img src=\"tinypose_pipeline.png\" width='800'/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/tinypose_pipeline.png\" width='800'/>\n",
     "</div>"
    ]
   }
diff --git a/modelcenter/PP-Vehicle/introduction_cn.ipynb b/modelcenter/PP-Vehicle/introduction_cn.ipynb
index f4dcee1c327d80e19e511e51965cf8e6b517cd73..85df5568db62c5af2c4ed16c43308a9753c6d9d0 100644
--- a/modelcenter/PP-Vehicle/introduction_cn.ipynb
+++ b/modelcenter/PP-Vehicle/introduction_cn.ipynb
@@ -259,7 +259,7 @@
     "PP-Vehicle 整体方案如下图所示:\n",
     "\n",
     "<div width=\"1000\" align=\"center\">\n",
-    "  <img src=\"ppvehicle.png\"/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/ppvehicle.png\"/>\n",
     "</div>\n",
     "\n",
     "\n",
diff --git a/modelcenter/PP-Vehicle/introduction_en.ipynb b/modelcenter/PP-Vehicle/introduction_en.ipynb
index 5fb17870c4cdac2e81024071ddcb911d8a0e0a80..f8ae8f68dbcbbf38b0ec463d51b2f307db2bc705 100644
--- a/modelcenter/PP-Vehicle/introduction_en.ipynb
+++ b/modelcenter/PP-Vehicle/introduction_en.ipynb
@@ -232,7 +232,7 @@
     "The overall solution for PP-Vehicle is shown in the graph below:\n",
     "\n",
     "<div width=\"1000\" align=\"center\">\n",
-    "  <img src=\"ppvehicle.png\"/>\n",
+    "  <img src=\"https://github.com/PaddlePaddle/PaddleDetection/raw/develop/docs/images/ppvehicle.png\"/>\n",
     "</div>\n",
     "\n",
     "\n",