An electric hair dryer that is comfortable to use, which relates to the field of household appliances. In order to solve the problem in which hair is frizzy and dry after being blow dried, the electric hair dryer comprises a housing assembly (1) provided with a housing (101) and a handle assembly (2) connected to the housing (101); the electric hair dryer also comprises a fan unit (3) and a heating unit (4) disposed inside of the housing (101), the fan unit (3) being used to suction air flow from an air inlet (5) of the electric hair dryer to enter an inner part of the housing (101); the heating unit (4) comprises a heat insulation piece (401) that has a hollow channel; the housing (101) is also internally provided with an inner barrel (19); the electric hair dryer comprises a first cold air flow path (6) through which cold air flow passes and that is defined by the housing (101) and the inner barrel (19), a second cold air flow path (7) of through which cold air flow passes and that is defined by the heat insulation piece (401), and a hot air flow path (8) that is defined by the inner barrel (19) and the heat insulation piece (401); and the air flow at the inner part of the housing (101) passes through the first cold air flow path (6), the hot air flow path (8) and the second cold air flow path (7) and then is blown out from respective air outlets respectively. The present invention is capable of ensuring the hydration and glossiness of hair while blow drying the hair.
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