A heat insulation door (D) for a refrigeration appliance (R), comprising: a heat insulation vacuum glass module , wherein the vacuum glass module comprises a first glass plate and a second glass plate that are overlapped and have a first interval ; and a third glass plate overlapped on the vacuum glass module and having a second interval with the vacuum glass module ; characterized in that the second interval is filled with inert gas, further comprising a fourth glass plate that is overlapped on a side of the vacuum glass module away from the third glass plate and has a third interval with the vacuum glass module , wherein the third interval is filled with inert gas, wherein along a front-to-rear direction of the door, one of the third glass plate and the fourth glass plate is located in front of the vacuum glass module as a front decoration plate, and the other one is located at the back of the vacuum glass module as a rear protective layer; and in a width and/or length direction of the first glass plate, the front decoration plate has a protruding portion that extends out of an edge of the vacuum glass module , and wherein the heat insulation door (D) further comprises a doorframe surrounding the vacuum glass module , wherein the doorframe comprises: a first cooperative wall , located on a rear side of the protruding portion and connected to the protruding portion ; a second cooperative wall , located behind the first cooperative wall along the front-to-rear direction (X); and a connecting wall , connecting the first cooperative wall and the second cooperative wall , wherein the vacuum glass module is located between the first cooperative wall and the second cooperative wall along the front-to-rear direction (X). a heat insulation vacuum glass module , wherein the vacuum glass module comprises a first glass plate and a second glass plate that are overlapped and have a first interval ; and a third glass plate overlapped on the vacuum glass module and having a second interval with the vacuum glass module ; characterized in that the second interval is filled with inert gas, further comprising a fourth glass plate that is overlapped on a side of the vacuum glass module away from the third glass plate and has a third interval with the vacuum glass module , wherein the third interval is filled with inert gas, wherein along a front-to-rear direction of the door, one of the third glass plate and the fourth glass plate is located in front of the vacuum glass module as a front decoration plate, and the other one is located at the back of the vacuum glass module as a rear protective layer; and in a width and/or length direction of the first glass plate, the front decoration plate has a protruding portion that extends out of an edge of the vacuum glass module , and wherein the heat insulation door (D) further comprises a doorframe surrounding the vacuum glass module , wherein the doorframe comprises: a first cooperative wall , located on a rear side of the protruding portion and connected to the protruding portion ; a second cooperative wall , located behind the first cooperative wall along the front-to-rear direction (X); and a connecting wall , connecting the first cooperative wall and the second cooperative wall , wherein the vacuum glass module is located between the first cooperative wall and the second cooperative wall along the front-to-rear direction (X). a first cooperative wall , located on a rear side of the protruding portion and connected to the protruding portion ; a second cooperative wall , located behind the first cooperative wall along the front-to-rear direction (X); and a connecting wall , connecting the first cooperative wall and the second cooperative wall , wherein the vacuum glass module is located between the first cooperative wall and the second cooperative wall along the front-to-rear direction (X). <EOS>