Mastitis is a significant common problem in lactating women and may contribute to weaning in the first three weeks. Mastitis has been reported as the third most common reason for weaning. Aim of the study was to evaluate the effectiveness of nursing intervention measures on minimizing Puerperal mastitis and promoting breast feeding. Research design: The study design was a quasi-experimental design. Setting: The study was conducted in gynecological outpatient clinic at Benha University Hospital. Sample: A purposive sample of 120 puerperal mothers selected randomly and divided into two equal group (60 study group & 60 control group). Tools of Data Collection: Two tools were used I-Interviewing questionnaire sheet which consisted of the following four parts socio demographic data, Obstetric history, Breast feeding history and women's knowledge regarding puerperal mastitis. II- Observational check list: which including four charts to assess and follow up breast mastitis healing(Visual analog scale to assess pain level, Newton's scale to assess breast edema, Pyrexia chart to assess body temperature and Modified Reeda scale to assess degree of redness Results :Revealed highly significance difference (P |