The invention belongs to the technical field of hydroengineering and provides two winding type fishways. Each winding type fishway comprises side walls, a base board, partition boards and guide boards, wherein the side walls are located on the two sides of the base board, the partition boards and the guide boards are arranged on the inner walls of the side walls, the fishway is divided into a plurality of pool chambers through the partition boards and the guide boards, and all the pool chambers are communicated with one another. The first fishway is arranged on a mountain on the side of a dam, the downstream end of the first fishway is located underwater in the downstream river channel of the dam, the upstream end of the first fishway is located underwater in the downstream river channel of the dam, and the shape of the first fishway is spiral or in a screw-like shape. The second fishway is composed of a first section, a third section and a second section, wherein the first section is located on the surface of the dam body, located on the downstream side, of the dam, the third section is located on the surface of the dam body, located on the upstream side, of the dam, the second section is located in the dam body and enables the first section and the third section to be communicated with each other, the downstream end of the second fishway is located underwater in the downstream river channel, the upstream end of the second fishway is located underwater in the upstream river channel, and the shape of the fishway is in the shape of a broken line.