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INTRODUCTION: Pain in childbirth and strategies for relieving it have been a subject of interest to researchers for many years. The use of cold (cryotherapy), as a pain relief technique generally, is quite well known and studied. However, few studies have addressed the use of cryotherapy as a strategy for relieving the pain of childbirth.OBJECTIVE: To evaluate the effects of cryotherapy in relieving childbirth pain.METHOD: Pilot intervention study using prospective data in a single intervention group, the outcome being the pain relief in women in labor. The sample comprised 36 parturients at the Hospital Maternidade Carmela Dutra, Rio de Janeiro, Brazil. Cryotherapy was applied to the parturients’ thoracolumbar region at cervical dilation of 5, 7, and/or 9 cm, using an icepack belt. In all, 48 applications were made. The responses regarding the action of cryotherapy on pain were recorded on a specific form. The Numeric Rating Scale (NRS) was used. Following a form, the parturients’ behavior during the application of cryotherapy was also observed.RESULTS: It was found that 91.67% (outcome) of the women reported pain relief and better conditions in which to experience childbirth. The behavior of 75% of the women in labor was calm and participatory; some slept (5.56%), others took short naps (19.44%).CONCLUSION: Cryotherapy proved effective in relieving pain in childbirth. Because characteristically, cryotherapy does not interfere in the physiological process of childbirth, it can be used in care for women in labor.