Foreign body in the ear, there will be a history of foreign body entering into the ear, ear discomfort, want to further determine whether the foreign body exists, mainly through the specialist examination, rigid otoscopy and CT examination. 1. Specialized examination: Electro-otoscopy is performed to visually check for the presence of a foreign body in the external auditory canal. 2. Rigid endoscopy: This examination can be done to check whether there is a foreign body in the ear, and directly observe the condition of the external auditory canal and the eardrum to clarify whether there is a foreign body. If there is a perforation of the eardrum, the perforation can be used to visualize the possibility of a foreign body in part of the tympanic cavity. 3. CT examination: CT examination belongs to the auxiliary judgment mode, through scanning the tissue in the ear, and the foreign body to identify, if there is an abnormal density shadow, it can be presumed that the foreign body exists, for the foreign body in the ear has a suggestive role. Once there is an obvious foreign body in the ear, it is necessary to consult a doctor in time for a systematic examination and standardized treatment after a clear diagnosis.