Automatic layout method for connecting lines between models in system simulation

The invention discloses an automatic layout method for connecting lines between models in system simulation, which comprises the following steps of: performing block diagram display on each model in the system simulation, and displaying information including the models, pictures and texts by using a graphic view framework; then node design is carried out between block diagrams, a nearby node list is obtained, the opposite direction of the current moving direction is removed, and the moving direction of the current path planning is stored; the nodes to be explored are stored through the priority queue, and the next node to be explored is selected according to the value of the comprehensive cost function; useless points between horizontal or vertical line segments in the path are removed, and then useless inflection points in the path are removed. According to the invention, the path is automatically planned by specifying the starting point and the ending point and obstacles are avoided; the planned path is as