In order to analyze job involvement situation of the Beijing residents and the influence factors and its influence on mental health，we conducted a sampling survey in the city's 16 districts，1626 valid samples were collected，the survey found that Job involvement of Beijing residents is in the average level，different social roles，working conditions，psychological capital and life pressure has an impact on the job involvement of the Beijing residents，job involvement has a positive impact on mental health.Finally，according to the survey data，to promote the job involvement of Beijing residents from the point of view of the government，the enterprise and the individual.The corresponding countermeasures and suggestions are put forward to improve the level of occupational health.