The utility model provides a landscape garden construction pipeline laying structure, and relates to the technical field of landscape garden construction, the landscape garden construction pipeline laying structure comprises a fixed block, a groove is arranged in the fixed block, a screw rod I is sleeved in the groove, one end of the screw rod I is fixedly provided with a rotating block I, and the surface of the screw rod I is in threaded connection with a sliding block I; and a positive and negative screw rod is arranged in the sliding block I in a sleeving manner. According to the pipeline laying device, by arranging the fixing block, the groove, the first lead screw, the first rotating block, the first sliding block, the forward and reverse lead screw, the second sliding block, the second rotating block, the fixing plate, the lifting plate, the rotating cylinder and other structures, when the pipeline laying device is used, if pipelines of different sizes are used for laying, the height of the pipeline laying device can be adjusted by arranging the gear, the rack and other structures; and the situation that equipment cannot be used when pipelines of different sizes are used for laying is avoided, the equipment does not need to be replaced for operation, the use cost of the equipment is effectively reduced, and the practicability of the equipment is improved.