BACKGROUND: Addition of clonidine to ropivacaine (0.2%) can potentially enhance analgesia without producing prolonged motor blockade. The aim of the study was to compare the post-operative pain relieving quality of ropivacaine (0.2%) and clonidine mixture to that of plain ropivacaine (0.2%) following caudal block in children's. OBJECTIVE: In this study I examined the quality, post-operative analgesia and haemodynamics effects in children when clonidine is added to ropivacaine for urogenital surgeries in caudal anaesthesia. MATERIAL AND METHODS: In this clinical trial, 30 children's aged 1-10 years who were candidates for elective urogenital surgeries were studied. Induction and maintenance of anaesthesia were achieved using propofol, sevoflurane and nitrous oxide. Children were randomly divided into 2 groups in double blind fashion, and were given caudal block with 0.2% ropivacaine (1ml/kg) alone and ropivacaine plus clonidine 2mcg/kg. Haemodynamic parameters were observed before, during and after the surgical procedure. Postoperative analgesia evaluated using FLACC score and sedation was assessed using Ramsey sedation scale. Paracetamol was given orally for cases with FLACC score 4 or more. RESULTS: Duration of analgesia was found to be significantly longer in the group given ropivacaine plus clonidine. CONCLUSIONS: I concluded that addition of clonidine to ropivacaine prolongs the duration of postoperative analgesia without any respiratory or heamodynamic side-effects.