By constructing the analysis framework of influencing factors of floating population renting，the paper analyzes the influencing factors of renting choice of floating population in Beijing. The major findings are as follows. Firstly，in terms of personal factors，with the increase of age and education，the proportion of the choice of renting is gradually reduced. Especially，there is a clear distinction between college education or above and higher school/secondary school education or below. Secondly，in terms of economic factors，the proportion of choosing renting of people whose income and consumption are at the lowest and the highest level is relatively low. It doesn’t happen that he lower the income is，the higher the proportion of the choice of renting. Thirdly，it terms of institutional factors，the floating population with non-agricultural accounts in comparison with agricultural accounts is less inclined to choose renting houses. Fourthly，in terms of social factors，on the whole，the higher the social class status，the less inclined to choose renting houses，except for the business class and the service personnel. Fifthly，With the growth of mobile age and the willingness to stay in Beijing for more than 5 years，floating population’s proportion of renting houses has declined.