According to the research of value and attitude toward love and marriage，we can get these finding：1. Youth in Guangzhou consider the spirit and sense satisfactions most，however，the affective and economic factors are less important than before. 2. Due to the increasing internet social networking and lack of the real social platform，the consciousness about responsibility of the marriage reduces and the marriage stability is weak. Marriage focuses on the rational relation more than the emotional relation. 3. Value of sex is more open than before，however，the consciousness about responsibility reduces. Female youth appeal the sex equality in reality. On the basis of the problem toward love and marriage in youth in Guangzhou，this research suggests that youth should build up correct value towards marriage and sex. Strengthen marriage and love education，reinforce emotional relation as well. Expand and set up the standard of the youth social networking platform. Develop diverse social work about love and marriage. Promote the social community work about individual and convenience.