diff --git a/packages/core/src/bundle/bundle.ts b/packages/core/src/bundle/bundle.ts
index a8ed798..f7989a0 100644
--- a/packages/core/src/bundle/bundle.ts
+++ b/packages/core/src/bundle/bundle.ts
@@ -142,8 +142,8 @@ export function makePackageDocument(opf: PackageDocument): string {
     'dc:title': opf.title(),
     'dc:language': opf.language(),
     'dc:creator': {
-      '@_id': 'creator',
-      '#text': opf.creator()
+      '@_id': opf.creator().uid,
+      '#text': opf.creator().name
     },
     'dc:date': toISO8601String(opf.metadata().date),
     'dc:description': opf.metadata().description,
@@ -154,9 +154,9 @@ export function makePackageDocument(opf: PackageDocument): string {
         '#text': toISO8601String(opf.metadata().lastModified)
       },
       {
-        '@_refines': '#creator',
+        '@_refines': '#' + opf.creator().uid,
         '@_property': 'file-as',
-        '#text': opf.creator()
+        '#text': opf.creator()?.fileAs ?? ''
       }
     ]
   };
diff --git a/packages/core/src/epub/opf.ts b/packages/core/src/epub/opf.ts
index 078a8a1..eac5d7b 100644
--- a/packages/core/src/epub/opf.ts
+++ b/packages/core/src/epub/opf.ts
@@ -12,12 +12,22 @@ const defu = createDefu((obj: any, key, value: any) => {
   }
 });
 
+export interface Author {
+  name: string;
+
+  fileAs?: string;
+
+  role?: string;
+
+  uid?: string;
+}
+
 export interface PackageDocumentMeta {
   title: string;
   language: string;
-  contributor: string[];
+  contributor: Author[];
   coverage: string;
-  creator: string;
+  creator: Author;
   date: Date;
   description: string;
   format: string;
@@ -42,9 +52,12 @@ export class PackageDocument {
   private _metadata: PackageDocumentMeta = {
     title: '',
     language: 'zh-CN',
-    contributor: [] as string[],
+    contributor: [],
     coverage: '',
-    creator: 'unknown',
+    creator: {
+      name: 'unknown',
+      uid: 'creator'
+    },
     date: new Date(),
     description: '',
     format: '',
@@ -151,7 +164,7 @@ export class PackageDocument {
     return this._identifier;
   }
 
-  public setIdentifier(identifier: string, uniqueIdentifier: string) {
+  public setIdentifier(identifier: string, uniqueIdentifier: string = 'uuid') {
     this._identifier = identifier;
     this._uniqueIdentifier = uniqueIdentifier;
   }
diff --git a/packages/core/test/__snapshots__/bundle.test.ts.snap b/packages/core/test/__snapshots__/bundle.test.ts.snap
index 527c990..cf93af3 100644
--- a/packages/core/test/__snapshots__/bundle.test.ts.snap
+++ b/packages/core/test/__snapshots__/bundle.test.ts.snap
@@ -39,7 +39,11 @@ PackageDocument {
   "_metadata": {
     "contributor": [],
     "coverage": "",
-    "creator": "XLor",
+    "creator": {
+      "fileAs": "XLor",
+      "name": "XLor",
+      "uid": "creator",
+    },
     "date": 2023-02-01T11:00:00.000Z,
     "description": "for test usage",
     "format": "",
diff --git a/packages/core/test/bundle.test.ts b/packages/core/test/bundle.test.ts
index 631d6c7..1aca66e 100644
--- a/packages/core/test/bundle.test.ts
+++ b/packages/core/test/bundle.test.ts
@@ -1,10 +1,10 @@
-import { Html } from './../src/epub/item';
 import { describe, it, expect } from 'vitest';
 
 import { Epub } from '../src';
-import { makeContainer, makePackageDocument } from '../src/bundle';
+import { Html } from '../src/epub/item';
 import { buildTocNav } from '../src/epub/nav';
 import { XHTMLBuilder } from '../src/bundle/xhtml';
+import { makeContainer, makePackageDocument } from '../src/bundle';
 
 describe('Bundle Epub', () => {
   it('generate container.xml', () => {
@@ -30,7 +30,7 @@ describe('Bundle Epub', () => {
       language: 'zh-CN',
       date: new Date('2023-02-01T11:00:00.000Z'),
       lastModified: new Date('2023-02-26T11:00:00.000Z'),
-      creator: 'XLor',
+      creator: { name: 'XLor', fileAs: 'XLor' },
       description: 'for test usage',
       source: 'imagine'
     });
@@ -69,7 +69,7 @@ describe('Bundle Epub', () => {
       title: 'Test Book',
       date: new Date('2023-02-01T11:00:00.000Z'),
       lastModified: new Date('2023-02-26T11:00:00.000Z'),
-      creator: 'XLor',
+      creator: { name: 'XLor', fileAs: 'XLor' },
       description: 'for test usage',
       source: 'imagine'
     });
@@ -105,7 +105,10 @@ describe('Bundle Epub', () => {
       title: 'Test Book',
       date: new Date('2023-02-01T11:00:00.000Z'),
       lastModified: new Date('2023-02-26T11:00:00.000Z'),
-      creator: 'XLor',
+      creator: {
+        name: 'XLor',
+        fileAs: 'XLor'
+      },
       description: 'for test usage',
       source: 'imagine'
     });