Background: The lactational amenorrhea method (LAM) is 98% successful in preventing future pregnancy within the first six months after delivery. Correct application and adherence to LAM's three criteria have an impact on its efficiency and efficacy.
Objectives: Assess the knowledge about lactational amenorrhea method (LAM) of women attending primary health care in QENA city, identify attitude toward LAM and determine the proportion of women use LAM  was also investigated the factors determining practice of LAM.
Patients and methods: This cross-sectional study on 400 breastfeeding women in reproductive ages 15:49 years was undertaken at family planning clinics of five primary health care units in Qena city to determine the prevalence of LAM usage. A structured questionnaire was utilised there.
Results:  Prevalence of usage lactational amenorrhea method (LAM) among the women attend primary health care units in QENA city was 65.3%. The failure of LAM and occurrence pregnancy was 29.9% among women use LAM.There is a significant positive correlation between duration of breastfeeding and duration of exclusive breastfeeding and duration of amenorrhea. According to logistic regression analysis mother age, mother education, family size, socioeconomic level significant related to LAM practice. Practicing of LAM was higher in women from rural residence, not working women and educated women level with lower socioeconomic level.
Conclusion: According to the findings rural women are more likely to practice LAM. According to the findings, health care practitioners should encourage the mothers to breastfeed their children and provide women with good lactational amenorrhea advice.