An automatically cleaned liquid storage bottle comprises a bottle body, a suction tube, a top cap, and a gas suction communicating pipe. One end of the suction tube is inserted into the bottom part of a negative pressure bottle through the top cap, one end of the communicating pipe is inserted into the top part of the liquid storage bottle through the top cap, and an electric piston and an ultrasonic cleaning transducer are arranged at a lower port; the liquid storage bottle body adopts a macro-stoma glass bottle, and the lower port of the bottle is funnel-shaped; and a dust gauze provided with a staff gauge is arranged at the middle part of the bottle. The automatically cleaned liquid storage bottle has the advantage of automatic cleaning function, and can automatically measure and weighthe negative pressure suction apparatus of an attractor; and the bottle can greatly facilitate the use of the negative pressure suction apparatus in hospitals, improve efficiency and automatize and intelligentize the negative pressure suction apparatus.