Is the social security card number unique?

The card number on the social security card is the social security number, located in the middle of the front of the social security card, and the social security card number is the number of the social security card. Social security cards adopt national unified standards; With the citizenship number, the social security number is also the search number of everyone's social security.

Legal objectivity:

Measures of the People's Republic of China for the Administration of Social Security Cards Article 2 The social security cards mentioned in these Measures refer to integrated circuit cards issued to the public and mainly used for government social management and public services in the fields of human resources and social security. The social security card is the electronic certificate for cardholders to enjoy social security and public employment services. It has the basic functions of information recording, information inquiry and business handling.