The present invention discloses a far-infrared hot air therapy device with multiple functions. The far-infrared hot air therapy device comprises an electric heating assembly, a circuit module, an air supplying and regulating device and a shell seat therein the air supplying and regulating device, the electric heating assembly and the circuit module are received the top of the shell seat is provided with an air supply duct provided with an air outlet at a proper section, and the bottom of the shell seat is provided with an air chamber having a space of proper section a plurality of air inlets are formed in the upper edge of the air chamber the air supplying and regulating device is arranged at the inner side of the periphery of the shell seat corresponding to the annular sections of the air inlets one outer side of the shell seat is extended outwardly with a proper section for a control unit connectable with an external power supply the electric heating assembly is located at a proper distance from the air supplying and regulating device and vertically corresponds to the air outlet of the air supply duct the electric heating assembly is an electric heating ceramic body with proper thickness and far-infrared uniform multi-duct filter perforations, so that multipoint temperature monitoring can be realized in such a way that the control unit is provided with a multichannel hole temperature regulating loop, thus enabling the electric heating assembly to heat to improve the far-infrared effect, and mildly irradiating a human body for assisting the blood vessel circulation and cell activation functions of the human body, and the ceramic body electric heating assembly can generate preset heat through rectification heating of the circuit module by means of the average output power of the temperature regulating loop and alternating current energy, and healthful hot air is blown out by the air supplying and regulating device to release healthful warm/hot air so as to relieve