Background and Objective: Sexual education is one of the most important issues in the field and affects the formation of human personality and his/her thoughts, emotions and behaviors. This study was conducted to review existing studies with the aim of \\\\\\\"determining the need of family-based sexual education \\\\\\\". Materials and Methods: This study was conducted based on the PRISMA systematic review protocol. The data were obtained from international scientific electronic resources including the World Health Organization, PubMed, Scopus, Web of Science, Google Scholar and Persian databases as well as manual search using appropriate keywords. The criteria for entering this sample were articles published in English and Persian from the beginning of 1990 to June 2018. Results: of the 294 articles reviewed, a total of 17 articles were included in the study. The results showed that the effective communication of parents with their children creates a proper attitude towards the gender issue as well as proper behaviors in this regard. These include improving adolescent reproductive health, raising awareness of puberty and menstruation, pregnancy and HIV / AIDS, emergency contraception and condom methods, delayed onset of sexual activity, less sexual communication and unwanted pregnancy prevention. The next point in reviewing these texts was the low level of communication between parents and boys in sexual matters. Conclusion: According to the results, the necessity of family-centered education is evident and this method can prevent the commission of many sexually inappropriate behavior. The important challenge in this regard is the creation of effective communication skills in the family and the education and health organs should set this agenda as a priority. Another important issue is the empowering of parents to teach their children about sexual issues.

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