Regarding the problem of slow efficiency of welding and mechanical connection for steel bar connection in wharf engineering, this paper studies the connection technology of grouting straight thread sleeve steel bar, and compares the failure strength of the anchorage system with different sleeve length by indoor tensile fest.The results show that the ratio of sleeve length to the diameter of the reinforcement is 8 or more, and the stress of the reinforcement can reach over 360 MPa when the anchorage system fails.The sleeve design can be determined according to the design tension of reinforcement and the shear strength of grouting material.Through the engineering inspection, the straight thread sleeve grouting technology can meet the engineering requirements, provide high steel bar connection efficiency, and reduce environmental pollution during construction.This technology can provide ideas for green construction.