Introduction: According to WHO, prolonged labour is one of the most important causes of maternal and newborn mortality. This study was carried out to assess the impact of education of partogramm on quality of midwifery’s care.

Materials and Methods: This survey was a quasi experimental study with one group pretest-posttest design which was carried out in some of governmental hospitals in Tehran in 2002. Subjects were 53 midwives who were working in different hospitals. The data was collected with an special questionnaire, WHO’s partogramm, and a check list to assess quality of midwifery care in labour. Result were analyzed with SPSS software.

Results: The findings showed that after education of partogramm a statistically significant improvement occurred in recording of twelve of fifteen variables including fetal heart rate, condition of amniotic fluid, vaginal bleeding, vital signs of mother, urine examination, drugs and fluid use, correct plotting of cervical dilatation, correct movement of dilatation graph to alert line, number of vaginal exams, recording time of rupture of membranes and time of amniotomy (p<0.0001).

Conclusion: The findings of this study indicate education of partogramm has a positive effect an quality of midwifery’s care and emphasis important of its education to midwifery’s students