The invention discloses an online game client side which comprises a network communication module, a protocol analyzing module, a login module, an accident center module, a scene module, a freshman module, a loading module, a data center module, a configuration file module and a functional module. The online game client side reduces coupling degree among the modules by adopting the accident center module and the data center module; effectively improves executing efficiency by means of a strategy that corresponding module is loaded according to the different modules where users enter; adopts user interface (UI) sharing, loads resources in non-synchronized mode, loads relative resources by interacting with users, reduces resource amount, simultaneously is favorable for modification of developers and art designers, greatly improves convenience, and pays attention to player experience including UI and game balance.