Gender violence refers to violence against women and it is understood as women subordination to men in opposite to her wishes. This subordination can lead to violent relationship between male and female as a result of the socialization processes and also of people's daily life, their habits and values disseminated through education and media. It allows to create and to reproduce stereotypes that reinforce the idea that males can control females' desires, opinions and liberty. Such ideology can be presented in the health professionals working at the Family Health Program (FHP). This study aims to perceive health workers' conceptions about violence against women and their health practices and interventions in FHP. The methodology was descriptive based on theoretical and methodological references on gender and violence as social constructions. The data were collected in a questionnaire with open questions and a check list to verify the level of acceptance or not to phrases reported to gender violence. Twenty seven health professionals, studying in specialization course in FHP, participated in this investigation, carried out in São Paulo, Brazil, in 2006.  The results showed that the majority of professionals were female, registered nurses, aged between 25 to 35 years old; they were single and had no children. The average of time working at FHP was 12 months. The majority of professionals reacted against women violence expressing anger to both,  aggressor men and aggressed women. It was also revealed a strong tendency to help aggressed women, understanding these aggression problems as health issues, even when they felt powerless to face the phenomenon. They showed idealized alternatives based on common sense and no gender reflection of violence against women. Finally their practices have been based on just like laywomen or laymen's perspective with total absence of scientific criteria's to handle it.