A far infrared hair dryer, comprising: a body , which is provided with a fluid inlet formed in a rear end and a fluid outlet formed in a front end; a fluid flowing path , which is arranged in the body and extends from the fluid inlet to the fluid outlet ; a conveying mechanism , which is arranged in the fluid flowing path and drives a fluid to flow from the fluid inlet to the fluid outlet ; and a heating mechanism , which is arranged in the fluid flowing path and is used for heating the fluid in the fluid flowing path , wherein the fluid flowing path is provided with an annular cavity at a front section, and the fluid outlet is of an annular orifice structure abutted to the annular cavity ; the heating mechanism is arranged in the annular cavity ; and the heating mechanism comprises an annular heat radiation assembly wound in the annular cavity in a suspended manner, an annular heater embedded into the annular heat radiation assembly , a far infrared ceramic coating layer arranged on an outer surface of the annular heat radiation assembly , and a fixed support that is fixed in the annular cavity and is used for supporting the annular heat radiation assembly ; the far infrared hair dryer is characterized that, the annular heat radiation assembly comprises a first annular body and a second annular body sleeving the first annular body ; the annular heater resists against and is fixed between the first annular body and the second annular body ; a plurality of uniformly arranged radiator fins are arranged around an inner side of the first annular body and an outer side of the second annular body ; the far infrared ceramic coating layer is coated on the radiator fins ; and the radiator fins are parallel to the fluid flowing path . a body , which is provided with a fluid inlet formed in a rear end and a fluid outlet formed in a front end; a fluid flowing path , which is arranged in the body and extends from the fluid inlet to the fluid outlet ; a conveying mechanism , which is arranged in the fluid flowing path and drives a fluid to flow from the fluid inlet to the fluid outlet ; and a heating mechanism , which is arranged in the fluid flowing path and is used for heating the fluid in the fluid flowing path , wherein the fluid flowing path is provided with an annular cavity at a front section, and the fluid outlet is of an annular orifice structure abutted to the annular cavity ; the heating mechanism is arranged in the annular cavity ; and the heating mechanism comprises an annular heat radiation assembly wound in the annular cavity in a suspended manner, an annular heater embedded into the annular heat radiation assembly , a far infrared ceramic coating layer arranged on an outer surface of the annular heat radiation assembly , and a fixed support that is fixed in the annular cavity and is used for supporting the annular heat radiation assembly ; the far infrared hair dryer is characterized that, the annular heat radiation assembly comprises a first annular body and a second annular body sleeving the first annular body ; the annular heater resists against and is fixed between the first annular body and the second annular body ; a plurality of uniformly arranged radiator fins are arranged around an inner side of the first annular body and an outer side of the second annular body ; the far infrared ceramic coating layer is coated on the radiator fins ; and the radiator fins are parallel to the fluid flowing path . <EOS>