The invention discloses a method and device for testing the system performance of terminal equipment. The method comprises the following steps: receiving a test instruction for testing the system performance of the terminal equipment; according to the test instruction, recording values of the influence of resource occupying factors on the system performance of the terminal equipment, wherein the resource occupying factors are factors occupying the resource of the terminal equipment. According to the invention, the values of the influence of the resource occupying factors on the system performance of the terminal equipment are recorded, so that the system performance of the terminal equipment can be tested based on the application of the terminal equipment; the method disclosed by the invention solves the problem that a test is incorrect due to the fact that the performance of the terminal equipment is tested only based on hardware in the prior art, so that the purpose that the system performance of the terminal equipment can be correctly detected is achieved.