Since the beginning of the last century, sex ratio (male to female) in India is showing disturbing patterns with relatively fewer numbers of females compared to males. The magnitude of juvenile masculinity has increased since 1980s with no sign of reverse. The time trend of juvenile sex ratio brings out demographic transition type ‘sex ratio transition’ in Indian population. Using data from the last hundred years, the paper tries to figure out the pattern of sex ratio transition at all India as well as at the state level. Spatial pattern of juvenile sex ratio have been judged and contemporary increase in masculinity have been highlighted. Despite the common wisdom that juvenile sex ratio in India is rising since the last century, the present paper indicates that juvenile masculinity is a long-standing problem of India that gets momentum during the recent period due to demographic as well as socio-economic forces.