Abstract: Safety analysis and control during construction require better estimation of live loads. In this paper, a survey on live loads of reinforced concrete buildings during construction has been conducted. It is found that stack load is the major live loads during the construction of reinforced concrete buildings and the live loads submit to exponential distribution. The parameters are estimated and the live loads are turned into uniform loads. Referring the method of choosing the standard value of loads in service phase, the standard value of live loads during construction is suggested. The results provide information on live loads in safety analysis and control of reinforced concrete buildings during construction. Contractors may arrange construction schedule and locate construction materials more reasonably, based on the information.