Why can't Taiwanese identity cards be used in Chinese mainland? Then what certificate did he use to come to the mainland?

According to the requirements of laws and regulations of China, people from Taiwan Province province need to hold a pass for Taiwan Province residents to travel to and from the mainland.

According to the Measures for the Administration of China Citizens' Travel to and from Taiwan Province Province:

Twenty-third Taiwan Province residents travel documents to and from the mainland, refers to Taiwan Province residents travel permits and other valid travel documents.

The function of early Taiwanese identity cards was limited to the travel documents of Taiwan Province residents entering the mainland. As a travel document, Taiwanese identity cards have become the only legal identity cards and documents for Taiwan Province residents in mainland China, unless Taiwan Province people hold foreign passports;

Taiwanese identity cards are no longer limited to travel documents, and have formed identity cards similar to those of mainland residents in Taiwan Province Province. Taiwan Province residents in Chinese mainland can use Taiwan Province identity cards for employment, medical care, real estate, account opening and finance. , its function far exceeds travel documents.

Extended data:

Basic procedures for handling mainland travel permit for taiwan residents

1. The applicant shall submit the application materials to the exit-entry administration department of the public security organ at or above the county level entrusted by the National Immigration Bureau;

2. If the application conditions are met and the application materials meet the statutory form, the accepting institution shall issue an acceptance receipt to the applicant;

3. If the application materials are incomplete or inconsistent with the statutory form, the applicant shall be informed of all the contents that need to be corrected at one time; Do not belong to the scope of responsibilities of the department or do not meet the acceptance requirements, shall not be accepted, and explain the reasons to the applicant.

4. The examination and approval authority shall conduct an examination and make a decision on approval or disapproval. If approved, a certificate will be issued; If it is not approved, it shall issue a decision of disapproval.

5. The applicant receives the certificate.

References:

China News Network-Measures for the Administration of China Citizens' Travel to and from Taiwan Province Province

Baidu Encyclopedia-mainland travel permit for taiwan residents