The yacht dock is a new structure form in China.In order to facilitate the getting on and off the yacht,the yacht docks are mostly floating structures and the guiding pile is widely used as a type of anchorage.The displacement caused under the horizontal load is large on the all-straight-pile yacht.Besides,the floating dock’s mass itself is also small.So it is easy to cause the dynamic response of the wharf structure under the harmonic wave load or berthing impact.Thereby,it will increase the guiding pile’s internal force and reduce the structure safety.The paper analyzes the dynamic response of the guiding-pile yacht under the berthing and wave load by the method of finite element and on the basic of the theory.The paper also derives the simple calculation method for the piece of yacht wharf structure,which lays a basis for the design work.