Background: Most women (78%) reported their sleep quality to be worse during the childbearing period than in any other time of their lives. Postpartum sleep disturbances are caused by the natural physiological alterations that follow childbirth. Aim: Is to assess the sleeping quality index among postpartum mothers and to determine the impact of educational intervention on improvement of postpartum sleeping pattern alterations. Design: Randomized control trial design. Sample: Consisted of (550) women immediately after delivery and divided into two main groups 275 for each. Study group received educational intervention booklet about good sleeping pattern and followed at 15th day and after 42nd day postpartum at Al Azhar Assiut University Hospital. The second group received the routine hospital care. Tools: Socio demographic data, the current delivery outcomes and Pittsburgh Sleep Quality Index, 2016 questionnaire. Results: About two thirds (65.8%) of the study group had moderate sleep quality Vs. (69.8%) of the control group with no statistical significant difference between both groups immediately after delivery. While there are highly statistical significant difference between both groups after 15th days and after 42nd days postpartum (P=0.000), for sleep quality items. Conclusion: Maternal sleep quality improved after 15 day and 42 day postpartum after implementing sleeping educational intervention. Recommendations: Further efforts are needed through educational intervention programs by nurses to improve maternal sleeping quality during pregnancy and the postpartum period.