The invention discloses an air heating component, which is a device for electrically heating air used in a gas separation membrane and solves the technical problem of much electrical heating dissipation energy and poor heating efficiency. The air heating component comprises a heating component (1), a barrel body (2), an entering gas flange port (1) and a leaving gas flange port (3); wherein the heating component comprises a connection flange (5), an electrical heating rod (9) and a lock nut (8); the connection flange (5) is fixedly arranged on the barrel mouth of the barrel body (2); the connection flange (5) is provided with a conical port (6) which is internally and movably provided with a hemispherical seal head (7) which is internally provided with a screwed hole (10), the head with ascrew of the electrical heating rod (9) passes through the screwed hole (10), and then is screwed with the lock nut (8) arranged outside of the connection flange (5). The air heating component has good sealing performance and high air heating efficiency.