The present article studies the perception of geriatricians about the phenomenon of aging. This research has been done with a qualitative phenomenological approach. The statistical population includes all professors and researchers who have worked in the field of aging and demography. Eighteen people were selected as the sample size based on the saturation rule by purposive sampling. Data collection tools were in-depth interviews and reading theoretical texts on aging in social work of the elderly, which were finally analyzed using thematic analysis technique. From the analysis of the findings, three main themes were extracted about the needs, consequences of aging and its problem-solving, which indicates that the elderly have economic, soc...