The rates of sexually transmitted infection(STI) among young people are a major public health concern. Globally,over 100 million STIs occur each year in people under the age of 25 years old (UNAIDS, 2009). According to World Health Organization (2011), at the end of 2010 there were about 34 million people living with HIV infection in the world and 42% of the newly HIV/AIDS infected occur in young people aged between 15 and 24 years old .