The benefit of getting a cochlear implant is that it helps to re-establish hearing. The disadvantage is that there may be complications after cochlear implantation, such as tinnitus, headache and wound infection. 1. Benefits: Cochlear implants can improve hearing to a great extent for people with disabilities whose hearing aids are ineffective, whose hearing is feeble and whose hearing is severely impaired. 2. Disadvantages: Cochlear implants require surgical implantation, so some postoperative complications may occur, such as tinnitus, headache, wound infection, small amount of postoperative bleeding, etc. However, such complications are usually artificially controllable. It is important to note that since cochlear implants are metal implants, if an MRI is needed after surgery, a doctor’s opinion should be sought and a special method should be used. In addition, cochlear implants should be worn with care to avoid collisions and strenuous exercise.