For a bag in the ear, consider an external ear canal boil if it is painful and obvious, or an auricular pseudocyst if it is not painful. An auricular pseudocyst is an inflammatory exudate that forms between the two layers of cartilage in the auricle after the auricle has been irregularly squeezed, forming a bag with relatively obvious local swelling and elevation, but no pain. If the auricular pseudocyst is relatively small, it can be treated by puncture, fluid extraction and pressure bandaging. If the auricular pseudocyst is relatively large or the pressure bandaging is not effective, auricular pseudocyst opening and drainage surgery is required. After surgery, attention should be paid to strengthening anti-inflammatory treatment to prevent purulent chondromyelitis of the ear. If there is a case of chondromyelitis of the ear, including possible deformity and sebaceous cyst, treatment is surgical; if there is pain in the long bag of the ear, external ear canal boils are considered, and treatment is anti-inflammatory and anti-swelling treatment. Therefore, ear pouches need to be examined in the ENT department to rule out osteoma of the external auditory canal, papilloma, middle ear cancer, etc.