Background & Objective : Desire for using a contraceptive method depends on individual general attitude and perception about it as well as individual understanding, needs and other people ’ s expectation about using that method . This research is conducted to determine reasons for mothers ’ desire in choosing a specific type of postpartum contraceptive method .

  Methods : This research is a cross- sectional study. The subjects were 384 lactating mothers who referred to Isfahan Health Centers for family planning services for the first time after delivery. The data were collected using questionnaires filled out through interview. Descriptive and inferential statistic methods were used to analyze the data .

  Results : The results indicated that the most commonly used contraceptive method in lactating mothers was coitus interruptus (27.4%). The most common reasons of mothers for selecting this method was its safety (45.3%) and effectiveness (25.1%) .

  Conclusions : Because of the high failure rate of coitus interruptus, health personnel should present proper and enough training to lactating mothers and their husbands about different contraceptive methods. They should also present the application of different contraceptive methods in breast feeding and increase couples ’ ability in making proper decisions as well as choosing safe and suitable contraceptive methods .