The utility model provides a gas passage for heat recovery of mine return air, including new trend inlet air channel, return air inlet air channel, new trend air -out passageway, return air air -out passageway and spiral fin heat pipe heat exchanger, spiral fin heat pipe heat exchanger return air passageway and fresh air pipeline have, new trend inlet air channel and new trend air -out passagewayrespectively with fresh air pipeline's both ends intercommunication, return air inlet air channel and return air air -out passageway all switch on with the both ends of return air passageway, fresh air inlet pipe way, new trend air -out pipeline, return air intake stack and return air air -out pipeline are crooked pipeline. The utility model discloses according to spiral fin heat pipe heat exchanger's parameter, for reducing gas flow resistance and can the be reasonable even heat exchanger that pass through, cross -section that suitable matching's bend radius who gradually delays the elbow andchannel entrance located, through enlargeing, contract the small -size and the length that effectively passes through, the fine gas flow passageway of formation has improved heat exchange efficiencyin limited space.