The invention discloses a dual-purpose cart for an orthopedic clinic. The dual-purpose cart comprises a bottom plate, supporting baffles, a seat plate and a universal wheel, the supporting baffles arearranged on the two sides of the upper end of the bottom plate, and a first rotary shaft is arranged between the two supporting baffles. The seat plate is arranged on the periphery of the first rotary shaft, a fixing groove is formed in the left side of the lower end of the seat plate, and a rotating support is arranged at the upper end of the bottom plate. A supporting rod is arranged on the rotating support, two hinges are arranged on the surfaces of the supporting baffles, and the right half portions of the hinges are connected with oblique cushion plates. A second rotary shaft is connected between the upper portions of the right sides of the two supporting baffles, a backrest is arranged on the periphery of the second rotary shaft, and telescopic rods are arranged on the positions, onthe outer sides of the supporting baffles, of the upper end of the bottom plate. A dust sucking cover, an air pump and a dust storage box are arranged on the right side of the backrest. According tothe dual-purpose cart, a seat capable of being rotatably fixed and thesupporting rod are additionally arranged, goods conveying of the device is not affected usually, meanwhile in need, the effect ofsupporting a patient is achieved, meanwhile the oblique cushion plates and the telescopic rods are additionally arranged, the functions of leg storing and liquid delivery are provided, and the practicability of the dual-purpose cart is improved.