The aim of this study is to compare the analgesic efficacy of intraincisional infiltration of Inj. Tramadol versus Inj. Bupivacaine for postoperative pain relief in Caesarean section under spinal anaesthesia and to compare postoperative pain scores and total consumption of rescue analgesics. Materials and Methods: This study was carried out in the Department of Obstetrics and Gynaecology in Rajah Muthiah Medical College and Hospital from 2018 -2020 after getting the approval of Ethical Committee. Sixty Antenatal mothers of age group (18-35 yrs) with BMI (18.5 -40 Kg/m2) scheduled for caesarean under spinal anaesthesia were included in the study. Patients under exclusion criteria were excluded in this study. Informed written consent was obtained prior to procedure. Under spinal anaesthesia caesarean section was performed. At the time of skin closure patients were randomly divided into two groups. Group A (n=30)treated with Inj. Tramadol 40 mg. Group B (n= 30)treated with Inj. Bupivacaine 0.25% 0.7 mg/kg. All drugs were diluted with sterile normal saline to 20 ml solution and administered intraincisionally at the time of skin closure. On arrival in recovery room, pain intensity is assessed by Visual Analogue Scale ranging from 0 to 10 and then 15, 30, 60 minutes, 2 hrs, 6 hrs, 12 hrs, 24 hrs after arrival from recovery. If analgesia is considered inadequate, rescue analgesics Inj. Diclofenac 75 mg intramuscular or Inj. Tramadol 1mg/kg intramuscular was added. The frequency of nausea, vomiting, rigor and mean arterial blood pressure were evaluated.At the end of 24 hours patients were asked about the quality of pain relief using the following scoreexcellent -4,very good-3, good -2, poor-1. Results: Demographic data -age distribution, BMI, gravidity showed no significant difference. Mean age,