Abstract: In order to study the formal employment and re-employment income effect on the social relief groups, we on the one hand, use the game theory to analyze the influence effect of the formal signing of the employment contract on social assistance of re-employment income, and, on the other hand, we the analyze the results from experience that signing the employment contract can significantly improve the social assistance re-employment income. However, empirical results show that signing a contract of employment needs the recipient group itself has higher skills. In general, signing a contract of employment on the formal employment still greatly improves the re-employment income recipient groups. We believe that signing the employment contract and contract of long-term sustainable effective premise is to the recipient group re-employment personnel professional skills training, and the government can use the buying service form according to the property of the employer to provide the “order type” training. Through this way, on the one hand it can transport the qualified labor force, and, on the other hand, it can solve the re-employment problem for the recipients. Finally, we can get the form that the employer, government and communities in need of re-employment personnel can reach “win-win-win” situation.