Compared with 83% floating employees holding the point that the "Comprehensive Insurance Temporary Means of Shanghai Floating Employees has ensured their fights and interests, only 58.7% of them would like to participate in this comprehensive insurance. According to the x2 examination, the factors influencing the will of participating in the comprehensive insurance are:gender, education, occupation, income, already working years in Shanghai and expected working years, and understanding of insurance. Pension plan is the most wanted insurance they wish to get, which is related to occupation and education, and does nothing with income. Floating employee social security should meet the will of the participants, and a multi-level insurance system should be established.