According to similarity principles, an infrared imaging experimental test system was set up based on scale model, several different working conditions in the condition of scale model were designed based vehicle volume, submerged depth, movement, wake discharging, and etc., so that it was possible to realize the static and dynamic thermal wake detection tests of scaled model. The aim is to determine the detectability of thermal wakes from submerged vehicle on one side, and find the influencing factors at thermal wakes detection and changing rules of the wakes to lay a foundation for future work.