The invention relates to the surface coating detection technical field, and especially relates to a method for testing ball falling impact resistant performance of a coating. The method comprises the following steps: manufacturing a templet; horizontally placing a test device on a testboard, ensuring no violent vibration at circumference and the humidity greater than 75% RH in a laboratory; taking the prepared templet which is characterized in that a paint film points towards, horizontally placing the templet at the center position of a pedestal; placing a steel ball with a certain mass in a center hole of a falling frame, keeping a certain distance from a ball body to the surface of the templet; pressing a falling bottom, instantly releasing the steel ball by a sucker so that the steel ball falls from a certain height in a free mode, impacting the templet surface; and determining the result; wherein the coating can not be broken and can not have the shedding in sheet shapes, and the cracking and tearing of the coating are allowed. According to the invention, after spraying a paint on the products, by performing the ball falling impact resistant performance test on the coating before usage, the toughness, hardness and deformation resistance capability of the paint coating can be fully understood, so that whether the paint satisfies the product usage requirement or not can be timely grasped, the paint performance is timely adjusted, and the product requirement can be satisfied.