Sleep is a biological requirement for human life, alongside food, water, and air. It has a vital effect on brain functions and many body systems as a result Poor sleep quality has been related to sexual difficulties.Evaluate the relationship between sleep and its effect on the sexual relationship in married women. aself-report questionnaire designed by the authors designed according to Younis et al (2017). Other questions were added to suit the purpose of study. The aim of the study and the details of the questionnaire were explained to the women before taking their informed consent. Participants were 300 women recruited from those attending Benha teaching hospital, Maternal and Childhood care units in Benha city, during the period from July to December 2020. Results: Adequate sleep duration leads to good sexual function.