diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/CheckDEntityUtil.java b/Aria/src/main/java/com/arialyy/aria/core/download/CheckDEntityUtil.java
index 22e024e8..17a5e193 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/CheckDEntityUtil.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/CheckDEntityUtil.java
@@ -110,7 +110,12 @@ public class CheckDEntityUtil implements ICheckEntityUtil {
     if (TextUtils.isEmpty(filePath)) {
       ALog.e(TAG, "下载失败，文件保存路径为null");
       return false;
-    } else if (!filePath.startsWith("/")) {
+    }
+    if (!FileUtil.canWrite(filePath)){
+      ALog.e(TAG, String.format("路径【%s】不可写", filePath));
+      return false;
+    }
+    if (!filePath.startsWith("/")) {
       ALog.e(TAG, String.format("下载失败，文件保存路径【%s】错误", filePath));
       return false;
     }
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/CheckDGEntityUtil.java b/Aria/src/main/java/com/arialyy/aria/core/download/CheckDGEntityUtil.java
index f540e770..5370f800 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/CheckDGEntityUtil.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/CheckDGEntityUtil.java
@@ -23,6 +23,7 @@ import com.arialyy.aria.core.inf.IOptionConstant;
 import com.arialyy.aria.orm.DbEntity;
 import com.arialyy.aria.util.ALog;
 import com.arialyy.aria.util.CheckUtil;
+import com.arialyy.aria.util.FileUtil;
 import com.arialyy.aria.util.RecordUtil;
 import java.io.File;
 import java.util.ArrayList;
@@ -62,33 +63,40 @@ public class CheckDGEntityUtil implements ICheckEntityUtil {
    * @return {@code true} 合法
    */
   private boolean checkDirPath() {
-    if (TextUtils.isEmpty(mWrapper.getDirPathTemp())) {
+    String dirPath = mWrapper.getDirPathTemp();
+
+    if (TextUtils.isEmpty(dirPath)) {
       ALog.e(TAG, "文件夹路径不能为null");
       return false;
-    } else if (!mWrapper.getDirPathTemp().startsWith("/")) {
-      ALog.e(TAG, String.format("文件夹路径【%s】错误", mWrapper.getDirPathTemp()));
+    }
+    if (!FileUtil.canWrite(dirPath)){
+      ALog.e(TAG, String.format("路径【%s】不可写", dirPath));
+      return false;
+    }
+    if (!dirPath.startsWith("/")) {
+      ALog.e(TAG, String.format("文件夹路径【%s】错误", dirPath));
       return false;
     }
-    File file = new File(mWrapper.getDirPathTemp());
+    File file = new File(dirPath);
     if (file.isFile()) {
-      ALog.e(TAG, String.format("路径【%s】是文件，请设置文件夹路径", mWrapper.getDirPathTemp()));
+      ALog.e(TAG, String.format("路径【%s】是文件，请设置文件夹路径", dirPath));
       return false;
     }
 
     // 检查路径冲突
     if (mWrapper.isNewTask() && !CheckUtil.checkDGPathConflicts(mWrapper.isIgnoreFilePathOccupy(),
-        mWrapper.getDirPathTemp())) {
+        dirPath)) {
       return false;
     }
 
     if (TextUtils.isEmpty(mEntity.getDirPath()) || !mEntity.getDirPath()
-        .equals(mWrapper.getDirPathTemp())) {
+        .equals(dirPath)) {
       if (!file.exists()) {
         file.mkdirs();
       }
       needModifyPath = true;
-      mEntity.setDirPath(mWrapper.getDirPathTemp());
-      ALog.i(TAG, String.format("文件夹路径改变，将更新文件夹路径为：%s", mWrapper.getDirPathTemp()));
+      mEntity.setDirPath(dirPath);
+      ALog.i(TAG, String.format("文件夹路径改变，将更新文件夹路径为：%s", dirPath));
     }
     return true;
   }
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/CheckFtpDirEntityUtil.java b/Aria/src/main/java/com/arialyy/aria/core/download/CheckFtpDirEntityUtil.java
index 3373ccd4..9e479fea 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/CheckFtpDirEntityUtil.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/CheckFtpDirEntityUtil.java
@@ -45,32 +45,34 @@ public class CheckFtpDirEntityUtil implements ICheckEntityUtil {
    * @return {@code true} 合法
    */
   private boolean checkDirPath() {
-    if (TextUtils.isEmpty(mWrapper.getDirPathTemp())) {
+    String dirPath = mWrapper.getDirPathTemp();
+    if (TextUtils.isEmpty(dirPath)) {
       ALog.e(TAG, "文件夹路径不能为null");
       return false;
-    } else if (!mWrapper.getDirPathTemp().startsWith("/")) {
-      ALog.e(TAG, String.format("文件夹路径【%s】错误", mWrapper.getDirPathTemp()));
+    }
+    if (!dirPath.startsWith("/")) {
+      ALog.e(TAG, String.format("文件夹路径【%s】错误", dirPath));
       return false;
     }
-    File file = new File(mWrapper.getDirPathTemp());
+    File file = new File(dirPath);
     if (file.isFile()) {
-      ALog.e(TAG, String.format("路径【%s】是文件，请设置文件夹路径", mWrapper.getDirPathTemp()));
+      ALog.e(TAG, String.format("路径【%s】是文件，请设置文件夹路径", dirPath));
       return false;
     }
 
     // 检查路径冲突
     if (mWrapper.isNewTask() && !CheckUtil.checkDGPathConflicts(mWrapper.isIgnoreFilePathOccupy(),
-        mWrapper.getDirPathTemp())) {
+        dirPath)) {
       return false;
     }
 
     if (TextUtils.isEmpty(mEntity.getDirPath()) || !mEntity.getDirPath()
-        .equals(mWrapper.getDirPathTemp())) {
+        .equals(dirPath)) {
       if (!file.exists()) {
         file.mkdirs();
       }
-      mEntity.setDirPath(mWrapper.getDirPathTemp());
-      ALog.i(TAG, String.format("文件夹路径改变，将更新文件夹路径为：%s", mWrapper.getDirPathTemp()));
+      mEntity.setDirPath(dirPath);
+      ALog.i(TAG, String.format("文件夹路径改变，将更新文件夹路径为：%s", dirPath));
     }
     return true;
   }
diff --git a/DEV_LOG.md b/DEV_LOG.md
index 3326794e..a4d2ecc6 100644
--- a/DEV_LOG.md
+++ b/DEV_LOG.md
@@ -1,4 +1,7 @@
 ## 开发日志
+  + v_3.8.13
+    - 修复spi机制的兼容问题，https://github.com/AriaLyy/Aria/issues/743
+    - 增加路径不可以写的判断，下载时，如果路径不可写，将执行失败回调 https://github.com/AriaLyy/Aria/issues/750
   + v_3.8.12 (2020/8/15)
     - 修复一个正则表达式导致的文件名保存号异常问题 https://github.com/AriaLyy/Aria/issues/715
     - 修复一个匿名内部类中的内存溢出的问题 https://github.com/AriaLyy/Aria/issues/705
diff --git a/PublicComponent/src/main/java/com/arialyy/aria/util/FileUtil.java b/PublicComponent/src/main/java/com/arialyy/aria/util/FileUtil.java
index 0fbc8ead..d75410f3 100644
--- a/PublicComponent/src/main/java/com/arialyy/aria/util/FileUtil.java
+++ b/PublicComponent/src/main/java/com/arialyy/aria/util/FileUtil.java
@@ -691,7 +691,7 @@ public class FileUtil {
     return list;
   }
 
-  private static boolean canWrite(String dirPath) {
+  public static boolean canWrite(String dirPath) {
     File dir = new File(dirPath);
     if (dir.canWrite()) {
       return true;
diff --git a/README.md b/README.md
index 2c050b68..3edcd28c 100644
--- a/README.md
+++ b/README.md
@@ -181,6 +181,7 @@ protected void onCreate(Bundle savedInstanceState) {
 ## 其他
  有任何问题，可以在[issues](https://github.com/AriaLyy/Aria/issues)给我留言反馈。</br>
  在提交问题前，希望你已经查看过[wiki](https://aria.laoyuyu.me/aria_doc/)或搜索过[issues](https://github.com/AriaLyy/Aria/issues)。</br>
+ [我的博客](https://www.laoyuyu.me)
 
 ## 捐赠
  Aria是作业利用业余时间开发的一个项目，如果你喜欢我写的软件，可以考虑给我捐赠以支持我的工作</br>