In order to improve the binding force between the paint layer and the aluminum alloy matrix, it is often necessary to carry out hairization pretreatment. Laser microwoven processing technology has the advantages of environmental protection, high efficiency, uniform and controllable hairing surface, etc., while the laser output of the continuous laser is more stable and faster. Therefore, it is necessary to study the influence of continuous laser microwoven on the adhesion of the paint layer. By controlling the laser power, the two main parameters of the lap rate are laser microwoven processing. The three-dimensional morphology of microwoven structure was observed and characterized by laser confocal microscopy, the surface roughness Ra and contour height Rz were measured by the surface contour comprehensive measuring instrument, the abrasion and wear testing machine was used to test the coating adhesion force by scratch method, and the connection between the microwoven morphology, surface roughness and coating adhesion force was finally established. The results show that the influence of laser power on the morphological size of the microwoven fabric is obvious, the microwoven morphology of the crater and the coronal morphology which is staggered and distributed effectively improves the adhesion of the paint layer, the adhesion force is higher at 0%~20%, the average can reach 36.41 N, which is about 54%. In the scratch experiment, the contour height Rz is closely related to the adhesion force of the paint layer; and the special undulating structure effectively inhibits the large-area peeling process of the paint layer.