Background; Parent-adolescent communication about sexual and reproductive health is important to improve adolescents’ reproductive and sexual health Moreover it also and has important implications in reducing unintended pregnancy, abortion and sexually transmitted infection, early sexual debut, limited contraceptive use and HIV which resulted from risky sexual behavior. This study assessed adolescent’s communication and associated factors on sexual and reproductive health among parents who live in Bahir Dar town 2018. Methods; community based cross sectional quantitative designtrangulated with qualitative study, using multistage sampling method. Data were collected using face to face interview from October 20/10/2018 to Jaunuary16/1/2019 supplemented with 4 focus group discussion (FGD) was conducted on 673 randomly selected parents who has children age between of 10–19-year-old. Data was analyzed using SPSS version20. Results; Less than half (39.5%) of parents reported discussing reproductive health issues with their adolescents during the last six months. The result of multiple regression parents occupation father of merchant (AOR 0.446 95% CI: 0.293-0.686)and Family size greater than five (AOR 0.386, 95% CI: 0.226-0.661)about sexual and reproductive health issues were less likely to communicate when compared toparents occupation of employed governmentandless than four respectively and parents who have demonstrated good reproductive health knowledge and positive attitude towards sexual and reproductive issue(AOR 4.453, 95% CI: 2.900- 6.839); (AOR 1.617, 95% CI: 1.149-2.276) higher in discussing reproductive healthwiththeir adolescentsrespectively.Findingsfrom qualitative study; difficulty of explanation,culture, lack awareness were the reason of hinder communication parentand adolescent about sexual and reproductive health issues matter. Conclusion and recommendation;Parent-adolescentdiscussionaboutreproductive healthissues was low and is bounded by lack of knowledge, and parental concern that discussion would encourage abstinence, sexual violence. Reproductive health programs should target on improving awareness ofparents on sexual and reproductive health issues and addressing sociocultural norms surrounding reproductivehealthissues.