The present invention relates to a warming device for medical treatment. The warming device according to an embodiment of the present invention comprises a heater a barrier member and a cover member disposed at a front side and a rear side of the heater, respectively and forming a fluid path that allows the fluid to be moved in a manner of surrounding the heater an air filter portion disposed on the fluid path and configured to remove an air a first connecting portion for allowing the fluid to inflow into the fluid path and a second connection portion for allowing the fluid to be discharged from the fluid path.
