The study aims to investigate factors that infuence the quality of life of HIV infected people. Based on findigns from a number of researches high level of CD4+ lymphocytes count, low viral load, employment and social support have been found to have a positive effect on the quality of life of HIV infected individuals, while depression, low CD4+ lymphocytes count, high level of viraemia, and comorbidities (such as pneumocystis pneumonia, hepatitis C, cytomegalovirus infection) have a negative effect on the quality of life. The role of gender in the quality of life of HIV infected people is as yet not clear. Some researches document lower quality of life in HIV positive women compared to HIV positive men, while others don’t show any difference. Antiretroviral therapy has both positive and negative effect on quality of life. There is an indication that co-infection with hepatitis G virus may positively influence health related aspects of the quality of life of HIV infected people. In a further research, the authors will examine the effects of HGV infection on general quality of life in HIV positive individuals. As yet very little research has been done in this area. It is hoped that by discovering the range of factors that may influence the quality of life of HIV infected people, their needs will be better understood, which may in turn increase their adherence to antiretroviral therapy and lower their tendency towards risky behavior.