The utility model provides a drainage bottle is used in cardiovascular medical treatment, include bottle down, go up the bottle, the connecting plate, the bearing frame, the lead screw, including a motor, an end cap, a controller, and a cover plate, the fixture block, the sponge, elastic webbing no. 1, elastic webbing no. 2 and draw -in groove, it is provided with the connecting plate to go up thebottle outer end, the bearing frame is installed to the connecting plate right -hand member, the bearing frame assembly is on the lead screw, the motor is installed to the lead screw lower extreme, the motor is equipped with down the bottle outer end, the bottle upper end is inlayed and is had last bottle down, the capacity size of the adjustable bottle subassembly of this design, elastic webbingno. 1 is installed to the bottle left end down, an elastic webbing front end is provided with the sponge, an elastic webbing left end is equipped with the fixture block, the bottle right -hand memberis provided with elastic webbing no. 2 down, the draw -in groove is installed to two right -hand members of elastic webbing, this design is convenient for the patient and is carried the bottle subassembly, the utility model discloses convenient to use, the operation of being convenient for, stability is good, and the reliability is high, portable.