A case of a psoriasis patient with the lesions in the left external auditory canal is reported.A 34-year-old male patient has the symptoms of left hearing loss and aural fullness for 8 years.Physical examination:left external auditory canal was full of granulation tissue.Ear HRCT:the left external auditory canal filled with tissue,no damage of the external auditory canal bone.Pure tone audiometry;mild conductive hearing loss in the left ear.Clinical diagnosis:psoriasis lesions in left external auditory canal,psoriasis vulgaris.