The effects of malformation of the external auditory canal are mainly psychological disorders, which can also affect the hearing. 1. Psychological disorders: malformation of the external auditory canal is mainly manifested in the size and shape of the ear, so it will be very different from normal people in appearance, which will lead to psychological disorders, and easy to produce psychological shadows, and in serious cases, it may even lead to autism, depression and other phenomena. 2. Impact on hearing: malformation of the external auditory canal will not only cause ear deformity, but also may cause atresia or narrowing of the external auditory canal. Sound reaching the atretic portion will be blocked, resulting in the sound not being able to travel effectively through the external auditory canal to the middle ear, so hearing will be affected. It is recommended that malformations of the external auditory canal must be treated with timely medical and surgical procedures so that they do not interfere with normal life and work.