The early high-pile wharf structure is damaged due to corrosion，aging，overload，fatigue and other reasons，which affect the function of the wharf. Regarding these problems，the reinforcement of wharf components is studied. Combined with the reinforcement example of high-pile wharf，ｂｙ the field test and numerical simulation method，the reinforcement effects of carbon fibers cloth on damaged components are analyzeｄ through the deflection and stress change of concrete components before and after reinforcement. The results show that sticking carbon fiber cloth can effectively reduce the deflection and stress of concrete components，and has a good reinforcement effect on damaged components，which can provide a reference for the repair of similar wharfs.The results show that CFRP can effectively reduce the deflection and stress of concrete members，and has a good reinforcement effect on damaged members.