The invention discloses a disposable drainage bottle. The disposable drainage bottle comprises a bottle body, a base and a connecting cylinder. The bottle body is in a cuboid shape, the thickness of a base plate of the bottle body is larger than or equal to 1 cm, at least two thread concave holes are formed in the base plate, and the depth of the thread concave holes ranges from 6 mm to 8 mm. The base is in a cuboid shape, the height of the base is larger than or equal to 5 cm, a bonding layer is arranged at the lower bottom face of the base, and a bonding agent protecting layer is arranged on the outer surface of the bonding layer; a plurality of inserting holes are formed in the base, wherein the number of the inserting holes is same as that of the thread concave holes, the positions of the inserting holes correspond to the positions of the thread concave holes, and the depth of the inserting holes ranges from 3.8 cm to 4 cm. The connecting cylinder comprises an upper-end thread part and a non-thread part, the upper-end thread part is in threaded fit with the thread concave holes, and the non-thread part is inserted into the corresponding inserting hole. By means of the mode, the disposable drainage bottle is simple and reasonable in structure and can be prevented from being kicked down, and unnecessary trouble is reduced.