Disclosed therein is an apparatus for fixing hydraulic pipes for a construction machine having a hydraulic pipe clamp fixing a plurality of pipes to a boom structure, including: a lower clamp (20) having a mounting hole (21); a clamp position setting member (22) for fixing the lower clamp (20) to one side of the boom structure (100) through a clamp support member (23) coupled to the mounting hole (21); an upper clamp (30) coupled onto the lower clamp (20) and having an interference prevention groove (31) in which a head portion (23a) of the clamp support member (23) is placed; and vibration-proof members (41,42) attached to the interiors of the clamps (20,30) to absorb vibration of the pipe (10). When the pipes (10) are assembled or disassembled, the lower clamp (20) is fixed to the boom structure to set the positions of the pipe and the clamp, and thus the assembly is greatly improved. Also, the clamp position setting member (22) for the lower clamp (20) is protected by the upper clamp (10) without being exp
