The invention discloses an implementation method for a state monitoring system based on a CAN network topology. The method comprises the following steps of 1, setting universal function modules and peripheral communication interfaces; 2, separately distributing a thread for each universal function module, and setting priorities; 3, determining data sharing modes and communication modes between thedifferent threads according to the orientation of a dataflow; 4, selecting implementation functions of internal interfaces between the different threads according to the data sharing and communication modes, and setting parameter values; and 5, using the universal function modules, peripheral communication interfaces, threads, implementation functions and parameter values to build the state monitoring system based on the CAN network topology. According to the method provided by the invention, the building of the state monitoring system of the launching platform is completed, so that the reliability, instantaneity and universality of monitoring on the launching vehicle are effectively improved, the launching vehicle state is accurately monitored during the actual using process of the launching vehicle, and the informationalized level of the whole launching vehicle is improved.