Do I need to reactivate my social security card after it is lost and reissued?

Need. According to the inquiry of People's Republic of China (PRC) and official website of the Ministry of Social Security, after the social security card is reissued, the insured person needs to activate the social security card at the corresponding bank outlet with his social security card and original identity certificate, and the medical insurance account will return to normal after activation. If the social security card is not activated, it cannot be used.