Objective: To compare the analgesic effect of postoperative Diclofenac suppository with intramuscular Diclofenac in children undergoing inguinal hernia surgery. Methodology: This study was held in Paeds Surgery Department, Nishtar Hospital Multan, Bahawal Victoria hospital Bahawalpur. from August 2018 to March 2019. Total no. of 160 patients were divided into two groups, one receiving diclofenac suppository group DS and the other which was group DI received intramuscular diclofenac injection. Numerical variables like age and weight were analyzed statistically by taking their mean and standard deviation while the outcome variable i.e. severity of pain was assessed through facial expressions as no pain, mild, moderate and severe pain in frequency percentage at 0, 2 and 4 hours interval. Results: Total 160 patients were divided into 2 groups equally, 80 in each (DS & DI). There was no significant difference in the efficacy of diclofenac suppository and diclofenac intramuscular when calculated at 0, 2 and 4 hours interval. When Chi-Square was applied to determine the association, it was observed that pain severity was significantly associated with age. But the association of pain severity with weight and with time intervals in two groups was not statistically significant. Conclusion: From this study we conclude that there is no significant difference between the postoperative analgesic effect of either suppository or intramuscular diclofenac but suppository route has an advantage over intramuscular in that it is easier and safer, less prone to injury, easy to administer and has longer duration of action, especially preferable in pediatric patients.