I applied for social security to declare my salary 20 17. This is my first time to do this. I can't.

According to the actual salary paid by employees in your company, you need to provide the local labor bureau with the employee's labor contract, the original and copy of ID card, enterprise qualification and official seal. Maternity insurance and industrial injury can be insured or not according to the situation of the unit, and the other three must be insured. If the local authorities agree, you can also take three insurances.