Cooling fin structure and electrical oil heater

The invention provides a cooling fin structure and an electrical oil heater, the cooling fin structure comprises a plurality of first cooling fin assemblies and a plurality of second cooling fin assemblies, the first cooling fin assemblies and the second cooling fin assemblies are internally provided with oil path channels, the first cooling fin assemblies and the second cooling fin assemblies are alternately stacked, and the first cooling fin assemblies and the second cooling fin assemblies are arranged in a staggered mode. A gap between the first cooling fin assembly and the second cooling fin assembly forms an air exchange area, and the edge of the first cooling fin assembly or the second cooling fin assembly is provided with a circle of heat conduction fins. Through the design that the heat conduction fins are arranged at intervals, the air exchange area is enlarged, uniform temperature distribution of the heat dissipation structure is ensured, and formation of surface overheat points is reduced. Due to t