Provided is a drain pipe fixing pipe clamp. Pipe clamp body, the pipe clamp body comprises an upper fixing ring and a lower fixing ring. A connecting seat is arranged on the bottom side of the lower fixing ring; the upper end of the connecting base is provided with a threaded penetrating opening. The connecting base and the lower fixing ring are integrally formed. A through hole is formed in the middle side of the pipe clamp body, and protruding blocks are arranged on the side of the through hole at equal intervals. The upper fixing ring, the lower fixing ring, the first connecting column, thesecond connecting column, the first protruding part, the second protruding part, the first penetrating hole and the second penetrating hole are designed in a matched mode. The upper fixing ring and the lower fixing ring are tightly attached and fixed; the drain pipe can be fixed by matching the screw with a wall or other supports along the threaded adapter on the connecting seat, the defects thatthe screw is easy to rust and inconvenient to disassemble and replace after a long time are avoided, the structural design is compact and reasonable, the practicability is very high, and the drain pipe fixing device is suitable for popularization.