Public bikes (PB), a kind of transport, play an important role in improving public transit system (PTS) and promoting city development. According to shortcomings in previous researches concerning the selection and layout of rental stations (RSSL) for urban public bike system(PBS), this paper conducted some researches on the model. Then, on the basis of proposing the Gather Effect (GE), the Lag Effect (LE) and the Life Circle (LC), it developed a mixed-integer?programming model for RSSL problems so as to minimize the bilateral cost, which is subjected to the demand of renting and returning, turnover rate and weighted average walking of users. By solv- ing the model, the spatial position of rental stations may be actually set up, and the number of bikes and lock- stakes can be calculated.