Background:    Patients with more than 70 dB sensory neural hearing loss can be benefitted by Cochlear Implantation. By Hearing Aid trial pre–operatively in such patients can sensitizes 8th Cranial Nerve (Vestibulo–Cochlear) as well as Auditory & Language areas in the brain. Objective:  Objective of the study was to evaluate role of using Hearing Aid pre–operatively in patients who are going to be operated for Cochlear Implant with long 4 years follow–up. Method:  The study was conducted in Department of ENT, Civil Hospital, Ahmedabad from August 2013 to April 2017. We studied & evaluated Hearing & Speech Abilities following cochlear implant in 90 patients of age group 1–7 years who used Hearing Aid pre–operatively for duration of at least 3 months. Control group was 90 children of 1–7 year of age who did not use hearing aid pre–operatively. All the subjects underwent Auditory Verbal Training by certified Speech & Language Pathologist and the benefits were evaluated on Categories of Auditory Performance(CAP) Scale & Speech Intelligibility Rating(SIR) Scale. Result:  Patients in case group showed significantly better score on CAP Scale & SIR Scale within same time frame which was taken as 3 months, 6 months, 9 months, 12 months and 24 months duration. However parental motivation & home training were also important. Conclusion: Using hearing aid pre–operatively in patients with cochlear implant confirms better Hearing & Speech Abilities compared to patients who did not use Hearing aid pre–operatively. So use of Hearing Aid should be offered pre–operatively to the patients who are going to be operated for Cochlear Implant. Role of educated and motivated parents is very significant for hearing outcome.