Based on the traditional testing technology of the new deepwater sheet pile wharf structure,we illustrate new testing technologies of ground penetrating radar (GPR),impact-echo method,and seismic wave CT.Through the project example,we probe into the application of the new testing technology for inspection of the qualities of unloading-board,underwater beam-slab and underground continuous wall,to provide a technical guidance for the overall or special detection of the sheet pile wharf and improve the safety ensurence of construction and operation of the sheet pile wharf.