Itchy outer ear can be considered as eczema of the outer ear, fungal disease of the outer ear canal or tumor of the outer ear canal and other diseases. 1. Eczema of the external ear: its occurrence may be related to various causes such as mental factors, allergic reactions, stimulation by drugs or other allergic substances, etc. When acute eczema occurs, the external auditory canal and the surrounding skin, the auricle and its itchiness, with erythematous spots, small pimples and other lesions appearing. 2. Fungal disease of the external auditory canal: when the external auditory canal accumulates secretion, water or long-term use of antibiotic ear drops, etc., it is easy to be infected by fungi, usually there will be itching and stuffy feeling in the ear, and sometimes it is itchy in the night, and the examination will show that the external auditory canal is covered with yellowish-black or white fungi. 3. Tumor of external auditory canal: it can be thought that its occurrence is related to long-term local chronic irritation, viral infection, etc. For example, when papilloma of external auditory canal occurs, the tumor fills up the external auditory canal, which can be obstructive, hearing loss or itchy. If there is persistent itching in the outer ear or the external auditory canal, it is recommended to go to the hospital specialist in time to find out the cause of the disease, and then follow the doctor’s instructions for treatment.