Early mobilization may exert a mechanical stimulation of intestinal function. Generally it is believed that early mobilization aids in the restoration of normal bowel function after abdominal surgery. Aim: this study aimed to determine the efficacy of early mobilization on bowel motility for children after abdominal surgery. Design: a quasi experimental research design was used to conduct this study. Subjects and method: a convenience sample of 60 children aged from 6 to 18 years. Setting: this study was conducted at the pediatric surgery unit in Assuit university children hospital. Tools: three tools were used to collect the necessary data, a structure questionnaire, child's mobilization and bowel motility monitoring sheet. Results: revealed that (100%) of the studied group walked three time per day while only (6.7%) in the control group during the post-operative day zero, time to passage of first flats and passage of first feces was statistically significant difference P=0.032* P=0.015* respectively. Conclusion: the early mobilization had beneficial effect on early passage of flatus and feces in children after abdominal surgery. Recommendations: training educational program for the nurses about early mobilization after abdominal surgery, this study should be replicated and expanded to include a larger sample.