Through the physical model test method, the interaction process between sea ice and high pile cap foundation of offshore wind power is observed, the ice duration of the foundation structure under different ice speeds and ice attack angles is measured, and the results are analyzed and discussed. The results show that the accumulation of certain degree and extent of damage of the ice raft is caused by the early action of the ship components and the ice sheet, which is contributed to reduce the ice force extreme value of the foundation structure. The research results are of certain reference significance for the engineering application of high pile cap foundation of offshore wind power in cold regions.