Drainage ditch built in combination with ground deformation joint

The utility model relates to the technical field of building structure construction, and discloses a drainage ditch built in combination with a ground deformation joint, which comprises a deformation joint, a drainage ditch, angle steel, a drainage port, a rainwater hopper, a rainwater pipe, a reinforced concrete slab, a retaining wall and cement nails, the drainage ditch is located under the deformation joint, the angle steel is arranged in the drainage ditch, the drainage port is formed in the tail end of the drainage ditch, and the drainage port is connected with the rainwater pipe through a rainwater hopper. According to the utility model, the deformation joint is combined with the drainage ditch, so that the deformation joint can be effectively utilized to collect and drain rainwater or surface accumulated water, the space utilization rate is improved, and the space waste caused by independent arrangement of the drainage ditch is reduced; meanwhile, the use amount of materials needed for leakage preventi