Descriptive-exploratory type study, carried with 168 inhabitants of the basin of Rio Acre - Brazil, which aimed to investigate preservative use and the risk for Sexually Transmited Diseases. For data collection it was used an application form with spontaneous participation and anonymate guaranty. As result, stands out the 64.3% masculine gender, 75.0% married/joined, 57.1% had incomplete first degree and 31.0% were illiterate. At that time 78.0% did not bring preservative when coming to the city, and 6.0% just came out seeking for sexual activity; 62.0% had already used the masculine preservative, with 67.2% of acceptance and 77.8% had kept it in the back pocket of the pants, with danger of damaging and infection risk and undesired pregnancy; 8.9% had had venereal disease, being 80.0% for the gonorrhea. Of these, 46.7% had negotiated respectively with pharmacist and doctor. Thus, 89.3% considered the prevention campaigns as great/good.