The tax department plays an important role in promoting social security. First of all, the tax authorities can strengthen the tax supervision of enterprises to ensure that enterprises pay social security fees in full and on time, thus ensuring the adequacy and stability of social security funds. Secondly, the tax department can share information and data with the social security department to realize accurate and timely updating of social security information and improve the efficiency and accuracy of social security management. In addition, the tax authorities can also encourage enterprises and individuals to actively participate in the social security system through the formulation and implementation of preferential tax policies, and improve the social security coverage and participation rate. Through these measures, the tax authorities can promote social security work and promote the modernization of state governance.