With China's rapid development, the competition among enterprises is getting more and more fierce. The management and development of private enterprises are critical. In particular, the development of private enterprises is limited, and in order to establish advantages and enhance the competitiveness of enterprises in such a large environment, a rational and effective incentive mechanism must be established. However, most private enterprises do not pay much attention to the incentive system and do not establish the perfect incentive mechanism. Incomplete incentives for private companies lead to low work sentiment, low job satisfaction, and even brain drain. Therefore, private enterprises can retain talented people, raise employees' working emotions and satisfaction, raise employees' sense of belonging, pride, and existence to improve their competitiveness and promote sustainable development. Therefore, taking private enterprises in Dongying, Shandong Province as an example, this paper's main contents are the influence of incentive mechanism on employee's job satisfaction, organizational citizenship behavior, emotional labor, and so on the enterprise's development. The purpose is to promote better development of the enterprise. Therefore, this study selects private enterprises in Dongying, Shandong Province, China, and conducts a questionnaire survey on employees to understand the development status and development potential of enterprises; It also discusses how to improve employee's job satisfaction and Emotional labor through incentive mechanism, to promote the performance and development of enterprises. The data processing method of this study was derived using SPSS 20.0 for Win7. The study found that motivation has a significantly positive (+) effect on employee job satisfaction. The results show that motivation has a significantly positive (+) influence on emotional labor. The results show that motivation has a significantly positive (+) impact on organizational citizenship behavior. The results show that organizational citizenship behavior has a significantly positive (+) impact on job satisfaction. The results show that organizational citizenship behavior has a significantly positive (+) impact on emotional labor. The results show that organizational citizenship behavior has a significantly positive (+) mediating effect on the relationship between motivation and job satisfaction. The results show that the relationship between organizational citizenship behavior and motivation and emotional labor is significantly positive (+) mediated. The results show that job satisfaction has a significantly positive (+) influence on work emotion. Summarize the research results and enlightenment as follows. The first point is that enterprise managers should communicate with employees in human resource management, encourage employees with higher working ability, and show other behaviors, to improve employees' organizational citizenship behavior, sense of identity, and sense of belonging. Second, enterprise managers either actively stimulate the internal driving force of employees, consider employing employees with strong internal motivation in the recruitment process, encourage employees to enjoy the process and significance of participating in organizational citizenship actions from the heart, and promote employees' innovative behavior with a sense of health. The third is that managers pay more attention to the emotional changes of employees or shape their future vision while infecting employees through professional skills and higher management level; We should open the perspective of subordinates and encourage employees to work in their way. Enterprises mobilize the enthusiasm of employees and link the interests of enterprises with those of employees. This kind of incentive is conducive to mobilizing employees' enthusiasm for work and the enterprise's sound development.