Cerumen, commonly known as earwax, is a yellowish secretion secreted by the ceruminous glands located in the skin of the cartilaginous part of the external auditory canal, and is a normally secreted substance. Cerumen can be dried in the air after being secreted and appears as thin flakes, and part of it can be sticky grease. This substance has the function of protecting the skin of the external auditory canal in the external auditory canal and adhering to dust, small insects and other foreign bodies. Cerumen can be discharged on its own when the organism performs movements such as chewing or opening the mouth. If cerumen accumulates too much in the external auditory canal, cerumen embolism can be triggered. Cerumen impaction can be caused by excessive cerumen secretion due to otitis externa, eczema, etc. It can also be caused by obstruction of cerumen discharge due to narrowing of the external auditory canal, scarring, tumors, and frequent digging of the ear, etc. The patient may have symptoms such as ear pain, occlusion of the ear, hearing loss, and tinnitus, etc. It is recommended that the patient consult a doctor for treatment in time.