diff --git a/src/module/DocumentAI/index.ts b/src/module/DocumentAI/index.ts
index 06f68f4..6c9170a 100644
--- a/src/module/DocumentAI/index.ts
+++ b/src/module/DocumentAI/index.ts
@@ -2,7 +2,15 @@ import { makeFormData } from 'koajax';
 import { BaseModel, RESTClient, toggle } from 'mobx-restful';
 
 import { LarkData } from '../../type';
-import { TaxiInvoice, TrainInvoice, VatInvoice, VehicleInvoice } from './type';
+import {
+    BankCard,
+    ContractField,
+    Resume,
+    TaxiInvoice,
+    TrainInvoice,
+    VatInvoice,
+    VehicleInvoice
+} from './type';
 
 export * from './type';
 
@@ -58,4 +66,60 @@ export abstract class DocumentAIModel extends BaseModel {
 
         return body!.data!.vehicle_invoice;
     }
+
+    /**
+     * @see {@link https://open.feishu.cn/document/server-docs/ai/optical_char_recognition-v1/basic_recognize}
+     */
+    @toggle('uploading')
+    async recognizeImageText(image: string) {
+        const { body } = await this.client.post<LarkData<{ text_list: string[] }>>(
+            'optical_char_recognition/v1/image/basic_recognize',
+            { image }
+        );
+
+        return body!.data!.text_list;
+    }
+
+    /**
+     * @see {@link https://open.feishu.cn/document/ai/document_ai-v1/bank_card/recognize}
+     */
+    @toggle('uploading')
+    async recognizeBankCard(file: File) {
+        const { body } = await this.client.post<LarkData<{ bank_card: BankCard }>>(
+            `${this.baseURI}/bank_card/recognize`,
+            makeFormData({ file })
+        );
+
+        return body!.data!.bank_card;
+    }
+
+    /**
+     * @see {@link https://open.feishu.cn/document/ai/document_ai-v1/resume/parse}
+     */
+    @toggle('uploading')
+    async parseResume(file: File) {
+        const { body } = await this.client.post<LarkData<{ resumes: Resume[] }>>(
+            `${this.baseURI}/resume/parse`,
+            makeFormData({ file })
+        );
+
+        return body!.data!.resumes;
+    }
+
+    /**
+     * @see {@link https://open.feishu.cn/document/server-docs/ai/document_ai-v1/contract/field_extraction}
+     */
+    @toggle('uploading')
+    async extractContractFields(
+        file: File,
+        pdf_page_limit = 15,
+        ocr_mode: 'force' | 'auto' | 'unused' = 'auto'
+    ) {
+        const { body } = await this.client.post<LarkData<ContractField>>(
+            `${this.baseURI}/contract/field_extraction`,
+            makeFormData({ file, pdf_page_limit, ocr_mode })
+        );
+
+        return body!.data!;
+    }
 }
diff --git a/src/module/DocumentAI/type.ts b/src/module/DocumentAI/type.ts
index fdb682e..735c1a9 100644
--- a/src/module/DocumentAI/type.ts
+++ b/src/module/DocumentAI/type.ts
@@ -21,7 +21,7 @@ export interface VatInvoice {
         | 'is_sealed'
         | 'machine_num';
     value: string;
-    items: Record<'type' | 'value', string>[][];
+    items: Record<'type' | 'value', string>[][][];
 }
 
 export interface TaxiInvoice {
@@ -67,3 +67,187 @@ export interface VehicleInvoice {
         | `total_price${'' | '_little'}`;
     value: string;
 }
+
+// Bank Card Recognition
+
+export interface BankCardEntity {
+    type: 'card_number' | 'date_of_expiry';
+    value: string;
+}
+
+export interface BankCard {
+    entities: BankCardEntity[];
+}
+
+// Resume Parsing
+
+export type Qualification =
+    | 1 // primary school
+    | 2 // junior high school
+    | 3 // secondary vocational
+    | 4 // high school
+    | 5 // specialist
+    | 6 // undergraduate
+    | 7 // master
+    | 8 // doctoral
+    | 9; // other
+
+export interface ResumeEducation {
+    school: string;
+    start_date: string;
+    start_time: string;
+    end_date: string;
+    end_time: string;
+    major: string;
+    degree: string;
+    qualification: Qualification;
+}
+
+export interface ResumeCareer {
+    company: string;
+    start_date: string;
+    start_time: string;
+    end_date: string;
+    end_time: string;
+    title: string;
+    type: 1 | 2;
+    type_str: 'internship' | 'full-time';
+    job_description: string;
+}
+
+export interface ResumeProject {
+    name: string;
+    title: string;
+    start_date: string;
+    start_time: string;
+    end_date: string;
+    end_time: string;
+    description: string;
+}
+
+export interface ResumeLanguage {
+    level: number;
+    description: string;
+}
+
+export interface ResumeAward {
+    award: string;
+    date: string;
+    description: string;
+}
+
+export interface ResumeCertificate {
+    name: string;
+    desc: string;
+}
+
+export interface ResumeCompetition {
+    name: string;
+    desc: string;
+}
+
+export interface Resume {
+    file_md5: string;
+    content: string;
+    new_content: string;
+    name: string;
+    email: string;
+    mobile: string;
+    mobile_is_virtual: boolean;
+    country_code: string;
+    educations: ResumeEducation[];
+    careers: ResumeCareer[];
+    projects: ResumeProject[];
+    work_year: number | null;
+    date_of_birth: string;
+    gender: 0 | 1 | 2;
+    willing_positions: string[];
+    current_location: string;
+    willing_locations: string[];
+    home_location: string;
+    languages: ResumeLanguage[];
+    awards: ResumeAward[];
+    certificates: ResumeCertificate[];
+    competitions: ResumeCompetition[];
+    self_evaluation: string;
+    urls: string[];
+    social_links: string[];
+}
+
+// Contract Field Extraction
+
+export interface ExtractPrice {
+    contract_price: number;
+    contract_price_original: string;
+    text: string;
+}
+
+export interface ExtractTime {
+    time_start: string;
+    time_end: string;
+    original_time_start: string;
+    original_time_end: string;
+    text_start: string;
+    text_end: string;
+}
+
+export interface ExtractTerm {
+    initial_time: string;
+    initial_unit: string;
+    text_initial_term: string;
+}
+
+export interface ExtractCopy {
+    copy_num: number;
+    original_copy: string;
+    key: string;
+    text: string;
+}
+
+export interface ExtractCurrency {
+    currency_name: string;
+    currency_text: string;
+}
+
+export interface BodyEntity {
+    address: string;
+    contacts: string;
+    email: string;
+    phone: string;
+    id_number: string;
+    legal_representative: string;
+    party: string;
+}
+
+export interface BodyInfo {
+    body_type: 'buy' | 'sell' | 'third';
+    value: BodyEntity;
+}
+
+export interface BankEntity {
+    account_name: string;
+    bank_name: string;
+    account_number: string;
+    phone: string;
+    contacts: string;
+    tax_number: string;
+    address: string;
+    id_number: string;
+    email: string;
+}
+
+export interface BankInfo {
+    bank_type: 'buy_bank' | 'sell_bank' | 'third_bank' | 'unceratin_bank';
+    value: BankEntity;
+}
+
+export interface ContractField {
+    file_id: string;
+    price: ExtractPrice;
+    time: ExtractTime & { initial_term: ExtractTerm };
+    copy: ExtractCopy;
+    currency: ExtractCurrency;
+    header: string;
+    body_info: BodyInfo[];
+    bank_info: BankInfo[];
+}