A program execution method, a server, a mobile terminal, and a system. The method includes: receiving a user action UA record sent by a mobile terminal; searching the UA record for a UA sequence that repeatedly appears; determining an association relationship between UAs in the UA sequence that repeatedly appears; creating a corresponding use mode according to the association relationship; and sending the use mode to the mobile terminal, so that the mobile terminal uses a use mode corresponding to a monitored UA, wherein the user action refers to an operation performed on an application program on the mobile terminal. In addition, a corresponding server, a mobile terminal, and a program execution system are provided. The present invention meets a personalized requirement of a user, and moreover reduces complexity of a user operation, saves the user's time and energy, and improves user experience.