The invention provides a composite thermal wall body structure for tunnel surrounding rock and a construction method of the structure. The composite thermal wall body structure comprises a heat supplylayer, a first embedded part, a composite thermal board, a connecting 
assembly, and an external wall board, wherein the 
heat supply layer comprises a 
heat supply guide 
pipe laid on a secondary liningof the tunnel surrounding rock and protection 
mortar with which the secondary lining is coated, the protection 
mortar wraps the 
heat supply guide 
pipe, the first embedded part is embedded in the protection 
mortar layer, the first side of the first embedded part is connected with the secondary lining, the second side of the first embedded part extends to the outer side of the protection mortar layer, the composite thermal board is installed on the second side of the first embedded part, the connecting 
assembly is embedded in the composite thermal board, the connecting 
assembly has a first endclose to the first embedded part and a second end away from the first embedded part, the second end of the connecting assembly extends to the side, away from the protection mortar layer, of the composite thermal board, the external wall board is installed on the second side of the connecting assembly, and the external wall board and the composite thermal board are the same in direction. The problem that a 
thermal insulation and 
gas insulation part of the tunnel surrounding rock of a tunnel 
ski resort is prevented from 
cold damage is solved.