Constant-pressure water supply equipment and system

The utility model provides constant-pressure water supply equipment and a constant-pressure water supply system. The constant-pressure water supply equipment comprises a pressure detection device and a water supply device, wherein the pressure detection device is used for detecting real-time water pressure in a pipeline and outputting a water pressure signal; the relay device is electrically connected with each water pump in the water pump set, and the relay device is used for controlling starting and stopping of each water pump in the water pump set; the water supply control device is used for receiving the real-time water pressure, generating a relay control instruction and outputting the relay control instruction; the mode switching device is used for connecting or disconnecting the electric connection between the relay device and the water supply control device; the display device is electrically connected with the water supply control device, and the display device is used for displaying the real-time wa