A foot switch is a way to control the on and off of a circuit by stepping on it, thereby realizing the start, stop, reversal or other control functions of mechanical equipment or production processes. The main function is to replace the operation of both hands, especially when the hands are inconvenient or cannot reach the control circuit, and the start, stop or other operations of the equipment are controlled through foot pressure. In addition, the foot switch can also be used to control the output current. Momentary foot switch and electric foot switch are two types of control switches widely used in different application scenarios. They differ in terms of working principles, structural design, usage environment, and functional characteristics. This article will conduct a detailed comparative analysis of these types of foot switches.