Pharmacological and non-pharmacological methods are used to control interventional pain in preterm newborns. Non-pharmacological methods should be preferred in the management of pain, especially during painful minor invasive procedures (blood collection, orogastric tube insertion, aspiration, etc.) applied during the day. Some of these methods are; kangaroo care, breast milk, fetal positioning, breastfeeding, listening to music and massage. Taking heel blood from babies who are being treated in the neonatal intensive care unit is among the duties, authorities and responsibilities of neonatal intensive care nurses. In addition, the effective management of pain by using non-pharmacological methods is among the professional ethical responsibilities of nurses working in neonatal intensive care units. While fulfilling these responsibilities, nurses should conduct researches with high levels of evidence and benefit from the researches effectively. In this context, determining the most effective non-pharmacological method and activating it in a clinical setting form the basis of nursing practices. In this context, the aim of our research is; The aim of this study is to evaluate the effects of fetal position, kangaroo care, combined fetal position with breast milk and breast milk, and kangaroo care in reducing pain during heel blood collection in preterm newborns.