Laparotomi is a surgical procedure in which the abdominal wall layer is operated on to remove the part that is experiencing problems. One of the problems that can occur in post laparotomy patients is pain. Pain is a person's emotional experience due to tissue damage that occurs after surgery. Laparotomy postoperative pain management must include all aspects, both in pharmacological and non-pharmacological aspects because pain is not only influenced by surgical wounds but also influenced by emotions. One of the non-pharmacological treatments that can be given to laparotomy postoperative patients is early mobilization. The purpose of this study was to determine the effect of early mobilization on reducing pain intensity in postoperative laparotomy patients at Cengkareng Hospital, Belimbing Room in 2024. This research design is a quantitative study with a quasi experimental method using a one group pre-post test design approach, the sample technique uses total sampling, the samples in this study were 20 intervention group samples, the results of statistical tests with the Wilcoxon Signed Ranks Test obtained the results of the p value = 0.001 or <0.05 there is a difference between the pain scale before and after early mobilization. So it can be concluded that there is an effect of early mobilization on reducing pain intensity in patients post laparotomy surgery