Post operative pain is a major concern after any surgery. Inadequate control of pain after major surgeries continues to be a cause of worry since it may be associated with a delay in recovery leading to an increase in incidence of chronic post surgical pain. At present, there are numerous methods exist for post operative pain management after major abdominal surgeries such as intrathecal or intravenous(I.V)opioids, epidural analgesia, and ultrasound guided peripheral nerve blocks,however options for post‑kidney transplantation analgesia are limited due to associated comorbidities in kidney transplant recipients. Ultrasound guided regional anaesthesia is an upcoming and rapidly progressive method of pain management. The ultrasound guided erector spinae plane block (ESPB) is a newer regional anaesthesia technique  currently being explored as a viable option for analgesia. ESPB is performed by injecting local anaesthetic in the plane between the erector spinae muscle and transverse process. Both intrathecal morphine and ESPB has been investigated for use in post-operative analgesia for various surgeries like total abdominal hysterectomy, laparoscopic cholecystectomy, percutaneous nephrolithotomy, open nephrectomy, but there are very limited studies in regarding there use in kidney transplant recepients. With the hypothesis that both intra-thecal morphine and ultrasound guided ESPB has effect on post operative pain management So, this study is being planned to compare and evaluate  both modalities and observe the duration, quality of analgesia and post operative analgesic consumption in the patients undergoing kidney transplantation.