The invention relates to a behavior 
logic modeling method of an industrial electronic 
system. The behavior 
logic modeling method includes the following steps: 1, determining the running process of the industrial electronic 
system according to the functions of the industrial electronic 
system, obtaining application scenes according to the running process, and building an application scene 
use case diagram of the industrial electronic system according to the application scenes; 2, building logical relationships between the application scenes, and forming an 
activity diagram of the industrial electronic system; 3, building 
signal time sequences and logical relationships of devices related to each application scene, and forming a 
sequence diagram of the industrial electronic system; 4, building state 
machine diagrams of the devices of the industrial electronic system, and observing behaviors and logic of the devices in the application scenes through the state 
machine diagrams. According to the behavior 
logic modeling method, complete descriptions of the behavior logic of the industrial electronic system are achieved through the 
use case diagram, the 
activity diagram, the 
sequence diagram and the state 
machine diagrams, and a workable model can be provided for system 
logic simulation in the early period and functional performance affirming in the 
late period of research and development of the industrial electronic system.