Abstract: A liquid waste bag includes a bag body which is provided with a receptor cavity and a joint inserted into the receptor cavity and stuck onto the bag body. A tear part used for tearing the hag body to discharge liquid is connected to an outer wall of the receptor cavity of the bag body. The liquid waste bag is reasonable in design and simple in structure, is used to collect liquid waste and facilitates transferring and unified treatment of liquid waste. The tear part is reasonably connected to the outer wall of the receptor cavity of the bag body, the receptor cavity of the bag body can be rapidly and conveniently torn through the tear part, and then, the liquid waste is rapidly and conveniently discharged.