Development and utilization of human resource have been changing rapidly as time and society changes. Not only do companies confront the business environment that is highly competitive and multicultural, employers of government agencies, administrator of schools and researchers are also facing challenges and crisis. In such circumstances, the job content of police officers seems unusual, as police have a heavier workload and longer working hour comparing to other civil servants. To top of that, the acknowledge of people considering polices as "caregiver of the Civil's" has also further increased the workload of police, leading to the difficulty of manpower shortage. Thus, in this research, we'll investigate the personal difference and correlation of police officers' working satisfaction and performance. This research aims to investigate the correlation of how polices' sense of satisfaction relates to their work performance. Conduct an online survey of the student of Central Police University’s 2019 Academic Year police the fourth category, second batch, class B training course and the police of Civil Aeronautics Administration, MOTC. We collect one hundred and eighty valid questionnaires. We designed a questionnaire by binding quantitative analysis and documentary investigation, analyzing whether the difference of police officers' backgrounds ( including sex ,age, seniority, educational background, position, official rank) has significant influence on sense of satisfaction and work performance, and further operate statistical analysis to the questionnaire according to spss 25.0, via t-test, One-Way ANOVA and Correlation Analysis. The research finds out that, on average, the sense of satisfaction at work ranks at medium to high level, there is no significant difference in gender, educational background and official rank; while factors like age, seniority, position and marriage, are mostly related to "inside-satisfaction" and "mission performance" among all aspects of working satisfaction. The average score of work performance is at the middle-high level, the high and lows are affected by seniority. Among all aspects of work performance, "mission performance" mostly relates to working satisfaction. Moreover, data shows a positive correlation to working satisfaction and working performance, thus we assume that the more one is satisfied, the better he/she performs.