When using the satellite navigation simulator to test the dynamic positioning accuracy of the navigation terminals, the test scene is generally a straight line or circular curve motion simply described by the motion equation in the coordinate system. There are problems of lacking randomness and irregularity in the test track, which is inconsistent with the actual application of the terminals, and the positioning track does not match the electronic map. This paper proposes to randomly and continuously select coordinate points on the road to plan the track according to the specific road in the electronic map, insert the changing speed and elevation with the derived track coordinate points, and create a dynamic scene of the simulator to test the terminals. The receiver terminal is tested by making an actual road dynamic test scene. The test results show that the dynamic positioning accuracy of the navigation terminal can be evaluated by using the irregular road track test scene with random coordinate points. The dynamic positioning deviation of the terminal is relatively large in a tight turn. By importing the standard track and the terminal track on the electronic map, the dynamic positioning track deviation can be visually displayed by matching the road. This method can be applied to dynamic positioning test of satellite navigation terminals combined with electronic map application, such as vehicle navigation instrument and wearable products.