The utility model provides a domestic multi-level inflating and pressure-setting device which is communicated with an inflation device and an object to be inflated. According to the device, the object to be inflated is inflated with air till air pressure reaches the pressure preset by the multi-level inflating and pressure-setting device, and then inflation is stopped. The device is characterized by comprising an air pressure cavity unit provided with a plurality of air hose adapters communicated with the inflation device and the object to be inflated, an upper cavity unit communicated with the upper end of the air pressure cavity unit and provided with a plurality of exhaust ports in different heights corresponding to different air pressures, an air pressure adjusting unit movably embedded into the bottom of the upper cavity unit, and a pressure presetting unit matched with the outside of the upper cavity unit, provided with through holes matched with the exhaust ports in height in a one-to-one corresponding mode and used for presetting pressure, and when the air pressure in the air pressure cavity reaches the preset pressure, air in the air pressure cavity is discharged from the upper cavity through the exhaust ports and the through holes which are communicated, so that the air pressure in the air pressure cavity reaches a balanced state and does not rise any more. The multi-level inflating and pressure-setting device is suitable for home use.