Based on the questionaire survey and statistic analysis,by investigating the present situation of 30 fitness clubs aerobics instructors in Hubei, the main results are as follow: Firstly, there are mainly five factors affecting the job satisfaction: salary and welfare, work condition, development tendency, interpersonal relationship and respect. Secondly, the fitness coaches score high points in the work condition, but receive low points in the salary and welfare, even at the level of low-satisfaction. Thirdly, through the T-examination as well as multi-factor variance analysis, we know that th...