The invention provides a heat insulation type well lid. The heat insulation type well lid comprises a well lid body and a heat insulation layer, wherein the well lid body is used for covering a wellhead; the heat insulation layer is fixed on the lower surface of the well lid body through matching of a rope and fixing structures on the well lid body; the fixing structures are at least three rope slots formed in the edge of the well lid body, and the rope slots are arranged at intervals; the heat insulation layer is attached to the lower surface of the well lid body, and the rope sequentially penetrates through the rope slots to fix the heat insulation layer to the lower surface of the well lid body; the fixing structures can also be at least three through holes formed in the well lid body, the through holes are arranged at intervals and are close to the edge of the well lid body, the heat insulation layer is attached to the lower surface of the well lid body, and the rope sequentially penetrates through the through holes to fix the heat insulation layer to the lower surface of the well lid body. With the adoption of the heat insulation type well lid, fixation between the heat insulation layer and the well lid body is realized.