From the study of beauty for ever. Works (2540, P. 46), it was found that the good faith is Having only one sexual partner, reduce the risk of HIV infection. The drug injected into the line type of risk of HIV infection than other drug addicts were 87.7 82.2% respectively, and found that the trust is bad Condom use to decrease the sexual% agree 24.6 consistent with the study of three of Shem! Glory and finance group. Spring pat (2547, P. S7) found that the general population age 15-49 years participate in the surveillance of AIDS knowledge behavior intention there was good. Can answer the most 3 number is to use a condom can prevent HIV infection, which 96.6 having only one partner without AIDS is one way to prevent infection of AIDS were 91.4 feeding with HIV can be infected with AIDS were 86.5.