Development of infants exposed to the HIV, due to contact with the virus and/or antiretroviral therapy during pregnancy and postnatal period, is a much discussed topic. The environment influences the infant´s overall development regardless of whether it has a risk factor, but even more so if any factor is present. AIM: to compare affordances in the environment and the development of infant exposed and not exposed to HIV. METHOD: cross-sectional study in which 40 exposed and 40 unexposed infants HIV of both sexes at the ages of 4, 8, 12 and 18 months of age were assessed using the Bayley III scale (motor, cognitive and language development)-and the AHEMD questionnaire addressed to parents about the environment and home stimulation. DATA ANALYSIS: Analysis of variance with two fixed factors and Tukey´s multiple comparisons method and Pearson´s linear correlation coefficient. RESULTS: No significant differences were found between the groups using the Bayley scale, but infants exposed to the virus presented higher values for the AHEMD scale fine motricity. Age differences were found for AHMED variables, regardless of group; and correlations for Bayley with the AHEMD scale total score. CONCLUSION: HIVexposed infants do not show a delay in motor, cognitive and language development compared to unexposed infants. On the contrary, they may present equal or even better