Background: MSM with HIV/AIDS needs care from close related person. The appropriate and continue care can not be separated from knowledge about caring. Caring will be more meaningful due to the role of family. Good family acceptance can improve self-esteem, social support and MSM’s health status also protect MSM from depression, risk of abuse, risk of suicide and others negative behavior that experienced by MSM. Method: Qualitative with the phenomenology approach becomes the design of this study. The study subjects were determined through purposive sampling and there were five informants because they had reached data saturation. The principle of credibility, dependability, comformability and transferbility is applied in this study. Qualitative data analysis uses a strategy from Collaizi. Results: There were 117 meaningful statements, 43 categories, 17 sub-themes and six themes that formed the phenomenon of family caring behavior towards MSM. The themes that formed the essence of family caring behavior towards LGBT-MSM are MSM as sexual orientation choice, heavy conditions experienced by MSM, family acceptance process, MSM with HIV/AIDS’s hopes essence of family caring behavior that done by the family and caring behavior that done by the family. Conclusion: There are six themes in qualitative research about the phenomenon of family caring behavior towards MSM with HIV/AIDS. An understanding of this phenomenon is needed by families in supporting the survival of MSM with HIV/AIDS for better quality of health. Collaboration among nurses, other health workers and the government is needed to achieve a holistic nursing process.