Micro pressure switch, electric steamer and operating method thereof

The invention discloses a micro pressure switch and aims to provide a micro pressure switch which is safely used and can control pressure in steam heating equipment within a certain pressure range. The implementation scheme is that the micro pressure switch comprises a pressure switch and a micro switch, wherein the pressure switch comprises a pressure switch base, a reset rod, a reset spring sleeved on the reset rod for resetting the reset rod, and a pressure measuring film; after the pressure measuring film is arranged on the pressure switch base, a cavity is formed in the pressure switch base, and the reset rod and the reset spring are arranged in the cavity; two ends of the reset rod are respectively contacted with a pressure measuring area of the pressure measuring film and a contact of the micro switch; and a fixed difference is formed between acting force F1 in a process of connecting the micro switch and acting force F2 in a process of disconnecting the micro switch. The invention also discloses an el