Wet and oily ears may be caused by oily cerumen (earwax), otitis externa, otitis media, cerebrospinal fluid ear leakage and so on. 1. Oily cerumen: Ceruminous glands in the ear are more developed, and more cerumen is secreted, which is often manifested as a small amount of yellow or brownish greasy thin liquid attached to the wall of the external ear canal. You can go to ENT for ear canal flushing regularly, and minimize greasy/spicy stimulating food in your daily diet. 2. Inflammation of the external auditory canal: When there is bacterial/fungal otitis externa or eczema in the ear canal, there will be wet and oily ears, initially thin, gradually becoming thick and purulent. Antibiotic ear drops can be used for bacteria, antifungal drugs can be used for fungi, and dexamethasone cream can be used for eczema. According to different situations in the physician’s guidance to be different drug treatment. 3. Otitis media: mostly seen in secretory otitis media and purulent otitis media, can appear in the ear wet with the phenomenon of oil, secretory otitis media is often manifested as yellowish, transparent, thin liquid. Purulent otitis media, mostly purulent discharge. It is recommended to consult the doctor for medication or surgical treatment under the guidance of the physician according to different situations. 4. Cerebrospinal fluid ear leakage: common in trauma, surgical injury and spontaneous, mostly manifested as clear water-like fluid out of the ear, manifested as wet ears with oil. Conservative or surgical treatment is often available. When the symptoms of wet ears with oil appear, it is recommended to go to the ENT department of the hospital as soon as possible to find out the cause of the disease and then further diagnosis and treatment.