diff --git a/lib/plugins/processor/asset.js b/lib/plugins/processor/asset.js
index 29b3259204..ee39ade154 100644
--- a/lib/plugins/processor/asset.js
+++ b/lib/plugins/processor/asset.js
@@ -3,7 +3,7 @@
 const common = require('./common');
 const Promise = require('bluebird');
 const yfm = require('hexo-front-matter');
-const { extname } = require('path');
+const { extname, relative } = require('path');
 const { Pattern } = require('hexo-util');
 
 module.exports = ctx => {
@@ -84,7 +84,7 @@ module.exports = ctx => {
   }
 
   function processAsset(file) {
-    const id = file.source.substring(ctx.base_dir.length).replace(/\\/g, '/');
+    const id = relative(ctx.base_dir, file.source).replace(/\\/g, '/');
     const Asset = ctx.model('Asset');
     const doc = Asset.findById(id);
 
diff --git a/test/scripts/processors/asset.js b/test/scripts/processors/asset.js
index 03e8d955b4..3f00bec51c 100644
--- a/test/scripts/processors/asset.js
+++ b/test/scripts/processors/asset.js
@@ -83,7 +83,28 @@ describe('asset', () => {
       return asset.remove();
     }).finally(() => fs.unlink(file.source));
   });
+  it('asset - type: create (when source path is configed to parent directory)', () => {
+    const file = newFile({
+      path: '../../source/foo.jpg',
+      type: 'create',
+      renderable: false
+    });
+
+    return fs.writeFile(file.source, 'foo').then(() => process(file)).then(() => {
+      const id = '../source/foo.jpg'; // The id should a relative path,because the 'lib/models/assets.js' use asset path by joining base path with "_id" directly.
+      const asset = Asset.findById(id);
+
+      asset._id.should.eql(id);
+      asset.path.should.eql(file.path);
+      asset.modified.should.be.true;
+      asset.renderable.should.be.false;
 
+      return asset.remove();
+    }).finally(() => {
+      fs.unlink(file.source);
+      fs.rmdir(pathFn.dirname(file.source));
+    });
+  });
   it('asset - type: update', () => {
     const file = newFile({
       path: 'foo.jpg',