Does a person only have one social security card?

Only one. Everyone can only get one social security card when handling social security cards, and one social security card corresponds to one person's social security account. Social security card is a kind of identity certificate and social security card, which can be used for medical insurance, old-age insurance, unemployment insurance and other services. SocialInsurance refers to a social and economic system that provides income or compensation for people who are unable to work, temporarily unemployed or suffer losses due to health reasons. The main items of social insurance include endowment insurance, medical insurance, unemployment insurance, industrial injury insurance and maternity insurance.