Computer-aided design method and device of Light-Emitting Diode (LED) display module

The invention relates to the technical field of Computer-Aided Design (CAD), and discloses a computer-aided design method of a Light-Emitting Diode (LED) display module. The method comprises the following steps of: selecting a control interface encapsulated type of the display module through user input; selecting a chip matched with the display module for use through the user input and defining the signal of a pin corresponding to the control interface based on the chip; defining a minimal unit display region and placing one or more of various LED elements selected by the user input within the minimal unit display region, and simultaneously copying the minimal unit display region in which the LED elements are placed in both of the transverse direction and the vertical direction to form the layout of the display module. The invention also discloses a computer-aided design device of the LED display module. With the computer-aided design and the computer-aided design device of the LED display module provided by the invention, the efficient design of the LED display module can be implemented in a visual way.