Introduction: Findings of study on disability types among Mongolian population confirm that 16631 (15.4) refers to visual impairment, speech and language disability 5999 (5.6), hard of hearing 12633 (11.7), mobility impairment 31265 (28.9), intellectual impairment 20898 (19.3) and other disabilities 20645 (19.1). There is no other study which assessed disability prevalence and some determinant factors which lead to disability and health status among older (ages women 55+, men 60+) disabled Mongolians. Goal: To assess the reason and type among disabled older Mongolians Materials and methods: This study was conducted on a random sample of disabled elderly people residing in Ulaanbaatar, Mongolia. Study is based on questionnaire and interview to indicate some health conditions. We used formal methods to assess activities of daily living and instrumental activities of daily living of disabled older people.Result: The sample represented 46.2% of men and 53.8% women in respondents. Median age of respondents was 75.2±10.5 (men 74.2±8.7, women 76.2±11.8). While 72.3% of respondents did physical work, 25.4% respondents did intellectual work and only 2.3% respondents had physical-intellectual work. According to the types of disability, 36.7% of respondents had mobility impairment, 16.7% of elder people had visual disability and 12.2% of respondents had hearing impairment. While 94.6% respondents had acquired disability, 4.6% respondents had congenital disability. In terms of activities of daily living, 76.2% of respondents had difficulty in bathing independently, 38.5% with dressing, and 62.3% had moving limitations at home.Conclusions:1. Mobility disability is higher (36.7%) than other types of disability among disabled older people.2. About 76.2% respondents had disability because of some diseases, about 8.5% about 8.5% from occupational disease, about 3.1% respondents from industrial injuries and about 11.5% respondents because of home injuries.3. Disability with activities of daily living is about 48% among disabled older people and the highest disabled daily activity is bathing, about 76.2%. Disability with instrumental activities of daily living is about 66% in disabled older people and the highest disabled instrumental activity is about 90%, is walking in long distance.4. According to this conclusion, disabled older people will greatly increase to demand health and social care assistance.