Insulated manhole cover

The invention relates to an insulated manhole cover. The manhole cover comprises a cover plate and a cover seat, wherein the cover plate and the cover seat are hinged together, a stair manhole is formed in the center of the cover seat, the cover plate is supported by and embedded in a first step of the stair manhole, and the insulated manhole cover is supported by and embedded in a second step of the stair manhole. The insulated manhole cover is simple in structure, low in cost, and good in insulation property. 本发明涉及一种保温井盖。包括盖板和盖座，盖板与盖座铰接，盖座的中心有阶梯人孔，阶梯人孔的第一台支撑嵌装所述的盖板，阶梯人孔的第二台支撑嵌装保温盖。它结构简单，成本低，保温性能好。