The drainage bag comprises a bag body, the upper end and the lower end of the outer side wall of the bag body are each provided with a set of through holes which are not communicated with the interior of the bag body, a
bandage rope is jointly arranged in the corresponding set of through holes, a throwing opening communicated with the interior of the bag body is formed in the upper portion of the outer side wall of the bag body, and a throwing
assembly is arranged in the throwing opening. An operator puts disinfection tablets or
disinfectant into the bag body for disinfection through the putting
assembly, and the putting
assembly comprises a sealing seat fixed in the putting opening and a sealing plug matched with the interior of the sealing seat; disinfecting articles are put into the bag body through the putting opening, waste liquid in the bag body is disinfected, the waste liquid is prevented from flowing out to cause
exposure infection of
medical staff in treatment, the safety of the device is improved, meanwhile, the upper end and the lower end of the bag body are respectively provided with the
bandage ropes used for being bound and fixed with the body of a patient, and the device is convenient to use. A patient can conveniently carry the
bed when walking out of the
bed, and convenience and comfort of the patient in the
treatment period are improved.