The utility model discloses a high -speed railway road bed cable duct system, including the cable duct major structure of strap bolt preformed hole and the concrete base of taking the tye, the cable duct major structure is fixed on the base by expansion bolts. Simpler in structure, transverse arrangement sets up the flowing water slot of taking the slope in the base, and slope ab intra leans out,can be directly with road bed top layer inner product log raft play road bed. The utility model relates to a high -speed railway road bed cable duct system adopts that expansion bolts is fixed to setup the cable duct major structure, has guaranteed the stability of cable duct major structure, has cancelled the shoulder pad, makes cable duct major structure and the drainage of road bed top layer smooth and easy, avoids not uniform settlement, the construction is bad and material damage etc. Is former therefore results in the unable exhaust circumstances of ponding, has guaranteed the operationsafety of railway, and the cable duct system reduces and takes up an area of the width in addition, dismantles the convenience during the operation, has practiced thrift the construction cost.