A rhinitis therapeutic device and a control method thereof for preventing a light source from irradiating light irrespective of a user's intention during use. A sensing light source and a light receiver are installed on inner surfaces of insertion rods of the rhinitis therapeutic device. The light from the sensing light source is detected in the light receiver, and when the rhinitis therapeutic device is inserted into the nose, the light of the sensing light source is blocked by the nasal septum. At least one therapeutic light source formed on the pair of insertion rods is controlled to emit light when the amount of light detected by the light receiver is less than or equal to a predetermined reference light amount or to emit light after power is supplied and then a predetermined reference time elapses.
