The invention disclosestrousers special for a patient. The trouserscomprise a trouser waist and trouser legs, wherein an elastic trouser waist belt is arranged on an opening in the upper end, elastic positioning layers are arranged at the two ends of the outer side of the elastic trouser waist belt, and two openings are formed in the two ends of the front side of the trouser waist in a through mode respectively and shielded by shielding cloth; an openable trouser seam is arranged on the inner side of each trouser leg, wherein a first elastic pad layer is arranged at the first side of the trouser seam, a second elastic pad layer is arranged at the second side of the trouser seam, the first elastic pad layer and the second elastic pad layer are connected through concealed buttons, a first storage bag opened upwards is arranged at the first side of the upper end of each trouser leg; the connecting position of the two trouser legs is the crotch, the trouser seams extend to the crotch from the upper edges of the trouser leg openings, and positioning grooves for fixing drainage tubes are formed in the elastic positioning layers and the elastic pad layers. The drainage tubes can be connected conveniently, drainage tube extrusion and liquid backflow are avoided, the patient can put on or take off the trousers conveniently, and the complex degree of replacing the trousers or the storage bags is reduced.