Software system achievement method and software system

The invention provides a software system achievement method and a software system. The method includes the steps that a main system process receives a sub system loading instruction and creates a corresponding sub system process according to the sub system loading instruction; the main system process receives user input information and sends the user input information to the sub system process; the sub system process receives the user input information sent by the main system process, processing and service logic processing of the user input information are carried out according to the user input information, and a pixel map of a corresponding interface of a sub system is drawn after the service logic processing is finished and is sent to the main system process; the main system process receives the pixel map sent by the sub system process, and the pixel map is drawn. According to the software system achievement method and the software system, influences of the sub system on the performance of the main system