According to Polanyis embedding theory, this paper analyses the spontaneous social protection caused by economic uninterrelated society under the conditions of Chinas rapid economic growth. Based on the view of national audit, the paper clarifies the role, pathways and related empirical evidence of national audit implementing governance function in reducing inequality and insecurity. Besides, this paper puts forward the corresponding improvement proposals and measures. Therefore, this study enriches the study of relations between the national audit and national governance.