BACKGROUND Congenital and acquired hearing loss considered as the most common disability. According to the WHO report, 360 million people worldwide have disabling hearing loss, and 32 million of these are children. Severe to profound sensorineural hearing loss can be treated successfully with cochlear implants. Post implant Auditory Verbal Therapy/ Hearing Implant Rehabilitation is essential for the progress and better outcome. Multidisciplinary team approach, including ENT, audiologist, speech therapy, social worker, coordinator, caregiver /parent is required. The first clinical speech therapy department in Mongolia was established by the School of Dentistry, MNUMS based at the Maxillofacial Surgery Department of the MCNHC in 2006 (G. Ariuntuul, B. Bulgan, U. Azzaya). Where as the very first Cochlear Implanted child in Mongolia was received the surgery and audiology support by A. Ulziibayar, L. Byambasuren, B. Misheel, B. Narantya and the hearing implant rehabilitation treatment successfully conducted by the abovementioned speech team in 2009. Aim: To analyze current situation on speech therapy intervention for patients with hearing loss and deafness. METHODS Retrospective hospital data were collected based on the School of Dentistry, Speech therapy department between January, 2009- February, 2017. In total 70 patients’ information were retrieved for the study. Descriptive method is used for statistical analysis. RESULTS Out of 70 patients, attended speech therapy sessions 38 (54%) were males, 32 (46%) were females; where as 21 (30%) had congenital deafness and 28 (40%) acquired; 21 (30%) patients with hearing loss not known their causes of deafness. From the total of 28 (100%) cases with acquired hearing loss/deafness 11 (39%) patients cause of deafness is due to complication from infectios disease: meningitis.