You can find the social security card number with the ID number.

If you have an ID number, you can check your social security card number. The inquiry method of social security card number is as follows:

1. You can bring your real and valid ID card to the local social security bureau for inquiry, and the agent needs to bring my ID card and the ID card of the inquired person;

2. You can query online or call 12333, and you can query the desired information through voice customer service or manual customer service.

Social security payment period:

1. There are five types of social insurance, so the payment period corresponding to different types of insurance is also different. In social security, maternity insurance, unemployment insurance and industrial injury insurance are all indefinite. Basically, as long as you can always pay, you can always enjoy the protection, so you don't have to pay for many years.

2. For endowment insurance, at least 15 years is required. Only in this way can you enjoy your retirement pension. Of course, medical insurance also requires a payment period. For women, they can enjoy lifelong medical insurance benefits if they have paid for 20 years before retirement and 25 years before retirement.

Legal basis: Article 10 of the Social Insurance Law of People's Republic of China (PRC).

Employees shall participate in the basic old-age insurance, and the employer and employees shall jointly pay the basic old-age insurance premium.

Individual industrial and commercial households without employees, part-time employees who have not participated in the basic old-age insurance in the employer and other flexible employees can participate in the basic old-age insurance, and individuals pay the basic old-age insurance premium.

The measures for the endowment insurance of civil servants and staff managed by reference to the Civil Service Law shall be formulated by the State Council.

Article 11

The basic old-age insurance combines social pooling with individual accounts.

The basic old-age insurance fund consists of employers, individual contributions and government subsidies.

Article 12

The employing unit shall pay the basic old-age insurance premium according to the proportion of the total wages of its employees stipulated by the state, and record it in the basic old-age insurance pooling fund.

Employees shall pay the basic old-age insurance premium in accordance with the proportion of wages stipulated by the state and record it in their personal accounts.

Individual industrial and commercial households without employees, part-time employees who have not participated in the basic old-age insurance in the employing unit and other flexible employees who have participated in the basic old-age insurance shall pay the basic old-age insurance premiums in accordance with state regulations and record them in the basic old-age insurance pooling fund and individual accounts respectively.