The social security card shows the frozen account balance.

Hello, the reason why the social security card is frozen is generally because the unit has not paid the social security fee on time for a long time. The social security department will freeze the account and return to normal after paying the social security fee. And in this case, all employees' social security cards can't be used normally. If it is the company's fault, the company should apply for social insurance for employees within 30 days from the date of hiring employees, and the local tax department will deduct the insurance premium from the reporting month in the following month. The social security system can only query the company's payment data for about 10 days in the following month. In this case, because the social security system has not received the payment information, the social security card will display "overall freeze". When the company applies for insurance (or individual insurance), the system will automatically release the "overall freeze" on the month 15 after the successful deduction;

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.