A water cooling plate is a heat dissipation device for electronic equipment. Its working principle is to transfer the heat of the equipment to the water through the water flow, and then take away the heat through the circulation of the water, so as to achieve the heat dissipation of the equipment. The water cooling plate is usually made of metal materials with small internal channels to increase the heat dissipation surface area for the water flow. A heat exchanger is a broader concept that can be used in a variety of applications, including air conditioning systems, automobile engine cooling systems, heat exchange in chemical production, etc. The purpose of a heat exchanger is to transfer heat energy from one fluid to another to achieve a change in temperature or a balance of heat energy. Heat exchangers can use different principles, such as heat conduction, convection, and radiation, to achieve heat transfer. Therefore, a water cooling plate is a special heat exchanger specifically used for heat dissipation of electronic equipment. Its main features are the production of metal materials and flowing hot water for heat transfer. A heat exchanger is a broader concept that can be used for heat energy transfer in different fields.