The invention relates to an energy-saving variable frequency pump control cabinet. The energy-saving variable frequency pump control cabinet comprises a variable frequency control cabinet, a pressure sensor and a water pump, wherein the pressure sensor is mounted on a water supply pipeline connected with the water pump; the variable frequency control cabinet is used for receiving signals of the pressure sensor to regulate the rotation speed of the water pump and comprises a cabinet body, a frequency converter, a program controller, a contact device, an intermediate relay, a thermal relay, an air switch and a main circuit wiring terminal; and the frequency converter, the program controller, the contact device, the intermediate relay, the thermal relay, the air switch and the main circuit wiring terminal are arranged in the cabinet body, the main circuit wiring terminal is connected with the frequency converter, the program controller, the contact device, the intermediate relay, the thermal relay and the air switch, respectively. According to the energy-saving variable frequency pump control cabinet, the pressure can be set according to requirements, and the rotation speed of the water pumps and the operation number of the water pumps can be automatically adjusted according to the set pressure, so that the energy-saving variable frequency pump control cabinet can work at a high-efficiency and energy-saving optimal state.