What does it mean that the transaction type of the national treasury Chengdu central debit and credit is social security?

Represents the deduction operation related to social insurance.

When it is mentioned that the transaction type of Chengdu Treasury Center debit and credit is social security, it means that this transaction is a debit operation related to social security. Social security refers to the system established by the state to protect citizens' basic social security rights and interests. Social security deduction refers to the deduction of a certain proportion of money from personal wages, salaries and other income in accordance with relevant laws, regulations and policies to pay social insurance expenses, including pension insurance, medical insurance, unemployment insurance, work injury insurance and maternity insurance. These funds are collected into the national treasury to ensure that the insured can enjoy the corresponding social security benefits when they encounter related risks and needs.