Lifting operation of large-scale offshore foundation piles is a difficult problem in the construction of offshore structures. In view of this situation, this paper takes IHC Company’s bilateral marine foundation pile hanger as the blueprint, and puts forward a structural scheme of "internal and external clamping type marine pile spreader" in order to improve the problems mentioned above. Aiming at the structure form of suspension proposed in this paper, by means of theoretical solution, simulation analysis and experimental research, the friction clamping and wedge tooth insertion clamping methods of suspension were studied and compared, and the bearing capacity of wedge tooth insertion clamping method of suspension is three times that of friction clamping method under the same transverse clamping load. The conclusion provides a reference for the selection of clamping mode of hanger in practical engineering application.