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APIs

RecognizeMainlandIDCardOCR

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最后更新时间: 2026-07-02 16:22:02

1. API Description

Domain name for API request: ocr.intl.tencentcloudapi.com.

This interface recognizes all fields on both sides of the Mainland China Resident Identity Card (second-generation), including name, gender, ethnicity, date of birth, address, ID number, issuing authority, and validity period, with an accuracy of over 99%.

In addition, the interface provides additional features for various scenarios, such as ID card and portrait photo cropping, along with five alarm detections (see table below).

Value-added ability Ability items
Alarm function
ID card photocopy warning
ID card on-screen display warning
Alarm for occlusion in the ID card frame
ID card reflective warning
Blurry picture warning
Default rate limit: 20 requests/second.

A maximum of 20 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: RecognizeMainlandIDCardOCR.
Version Yes String Common Params. The value used for this API: 2018-11-19.
Region Yes String Common Params. For more information, please see the list of regions supported by the product. This API only supports: ap-singapore.
ImageBase64 No String The Base64 value of the image. The image is required to be no larger than 7M after Base64 encoding, and the resolution is recommended to be 500*800 or above. PNG, JPG, JPEG, and BMP formats are supported. It is recommended that the card part occupies at least 2/3 of the picture. One of ImageUrl and ImageBase64 of the image must be provided. If both are provided, only ImageUrl will be used.
ImageUrl No String The URL address of the image. The image is required to be no larger than 7M after Base64 encoding, and the resolution is recommended to be 500*800 or above. PNG, JPG, JPEG, and BMP formats are supported. It is recommended that the card part occupies at least 2/3 of the picture. It is recommended that images be stored in Tencent Cloud to ensure higher download speed and stability.
CardSide No String FRONT: The side of the ID card with the photo (portrait side), BACK: The side of the ID card with the national emblem (national emblem side). If this parameter is not filled in, the front and back of the ID card will be automatically determined for you.
CropPortrait No Boolean Whether to return the ID card portrait, the default is false
CropIdCard No Boolean Whether to enable ID card photo cropping (removing excess edges outside the ID, automatically correcting the shooting angle), the default value is false

3. Output Parameters

Parameter Name Type Description
Name String Name((portrait side))
Sex String Gender (portrait side)
Nation String Ethnicity (portrait side)
Birth String Date of birth (portrait side)
Address String Address(portrait side)
IdNum String ID number (portrait side)
Authority String Issuing authority (national emblem side)
ValidDate String Validity period (national emblem side)
WarnCardInfos Array of Integer Warning information for the ID card. Valid warning codes:
-9101 (incomplete card border),
-9102 (photocopied document),
-9103 (re-photographed document),
-9104 (PS-altered document),
-9107 (reflective document),
-9108 (blurry image),
-9109 (warning capability not enabled).
PortraitImage String Portrait image base64
IdCardImage String ID card photo cropping results base64
RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Example of Chinese Mainland ID Card

Input Example

POST / HTTP/1.1
Host: ocr.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: RecognizeMainlandIDCardOCR
<common request parameters>

{
    "ImageBase64": "/9j/4AAQSkZJRg.....s97n//2Q=="
}

Output Example

{
    "Response": {
        "Address": "abc",
        "Authority": "",
        "Birth": "abc",
        "IdCardImage": "",
        "IdNum": "41290*******291716",
        "Name": "abc",
        "Nation": "abc",
        "PortraitImage": "",
        "RequestId": "8c051b49-2ff8-4e41-971e-1a7cf37bbab5",
        "Sex": "abc",
        "ValidDate": "",
        "WarnCardInfos": [
            -9101
        ]
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
FailedOperation.CardSideError The CardSide type of the ID card is incorrect.
FailedOperation.DownLoadError Failed to download the file.
FailedOperation.EmptyImageError The image is empty.
FailedOperation.IdCardInfoIllegal The ID card information (ID number, name, etc.) is invalid.
FailedOperation.IdCardTooSmall The resolution of the image is too low or the proportion of the ID card in the image is too small.
FailedOperation.ImageBlur The image is blurry.
FailedOperation.ImageDecodeFailed Failed to decode the image.
FailedOperation.ImageNoIdCard No ID card is detected in the image.
FailedOperation.ImageSizeTooLarge The image size exceeds the limit. Refer to the image size constraints in the input parameter description.
FailedOperation.MultiCardError Multiple cards of the same side are detected in the image. Please upload an image with a single side or one front and one back side.
FailedOperation.OcrFailed OCR recognition failed. This error may be caused by unstable network connections, service anomalies, or other issues.
FailedOperation.UnKnowError Unknown error.
FailedOperation.UnOpenError The service has not been activated.
FailedOperation.WarningServiceFailed The general warning service encountered an exception.
InvalidParameter.ConfigFormatError Config is not in valid JSON format.
InvalidParameterValue.InvalidParameterValueLimit Incorrect parameter value.
LimitExceeded.TooLargeFileError The file size exceeds the limit
ResourceUnavailable.InArrears The account has insufficient balance.
ResourceUnavailable.ResourcePackageRunOut The resource package has been exhausted.
ResourcesSoldOut.ChargeStatusException The billing status is abnormal.

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