▎ 摘　　要

NOVELTY - A chitosan/graphene oxide composite film based chemical resistance gas sensor comprises a sensor, a stainless steel wire mesh, and a chitosan/graphene oxide composite film, where the device structure of the sensor is a body resistance type, and the sensing unit of the sensor comprises a copper piece with a thickness of 100 mu m as a back electrode of the sensor, the stainless steel wire mesh is a positive electrode, and the chitosan/graphene oxide composite film is inserted into the copper piece and the wire mesh, which are fixed together and mounted on a ceramic substrate. USE - Chitosan/graphene oxide composite film based chemical resistance gas sensor. ADVANTAGE - The chitosan/graphene oxide composite film based chemical resistance gas sensor improves the electrical conductivity and gas sensitivity of the material at normal temperature.