The heat insulation door of a refrigeration appliance has a door body. The door body includes a heat insulation glass module with at least two layers of glass plates disposed with an interval; a doorframe that surrounds the heat insulation glass module and that includes a rear frame portion located at the back of the heat insulation glass module, and a door sealing strip connected to the back of the rear frame portion. The doorframe further has an enclosed heat insulation cavity, wherein the heat insulation cavity is located between the door sealing strip and the heat insulation glass module along a front-to-rear direction or located on the inner side of the door sealing strip in a direction parallel to the door body. The present invention can improve the heat insulation effect of the refrigeration appliance.