The comprehensive damage detection of in-service high-pile wharfs is difficult because the structural type is complex and water operations are needed.Based on the independent research and development equipment,we adopt the pile integrity test equipment named VSP and concrete internal damage CT equipment to carry out detection and assessment on an oil drilling platform wharf after ship collision.The results show that the upper structure and piles can be detected accurately using VSP and engineering CT,and the degree of damage of upper structure and piles can be evaluated scientifically according to the results.It can be promoted as a new detection method of in-service high-pile wharves.