Hypotensive anaesthesia represents a great challenge to the anaesthetist. Hypotensive anaesthesia is effective in decreasing blood loss and provides better visibility in surgical field.agood hypotensive anaesthesia is don to make the possible more easy, but not to make the impossible possible. There are corner stones to achieve a safe level of hypotension which maintain adequate perfusion to main vital organs. These corner stones includes: clinical considerations, techniques, monitoring, reversal of hypotension and problems & complications. The precise incidence of complications with hypotensive anaesthesia is difficult to determine so the decision to use hypotensive anaesthesia should not be made in the operating room without careful consideration of the potential complications.