People's mediators professionalism benefits to promoting the expertise of people's mediation, and enhancing the quality of dealing with disputes, which owes to innovating people's mediation. Kunshan city takes the lead in exploring the people's mediators professionalism, it achieves remarkable results, but still has some problems. Considering the basic requirements of professionalism and Kunshan's practical experience, promoting the professionalism of people's mediators needs to take the following actions: shaping environment on people's mediators professional identity; setting up system on the people's mediators access；building system on people's mediators vocational training; carrying out system on people's mediators professional salary; implementing system on the people's mediators performance appraisal; filling system on people's mediators professional regulatory; establishing system on people's mediators professional ethics.