The great fluid debates continues to rage. There is still no clear consensus or agreement as to whether the perioperative should be treated according to a liberal fluid regimen, or a restrictive one. The debate began a number of years ago in the intensive care unit by Schoemaker and collegues. Large randomized controlled study is peformed about the perioperative fluid management. Most of the study is showing the god result in fluid restriction management including ERAS (Enhanced Recovery After Surgery). Fluid management should be carefully adjusted by the patient’s clinical condition. But, unnecessary fluid challenge can cause pulmonary edema, delayed wound healing, and delayed bowel movement in perioperative patients. Perioperative fluid restriction does not lead to do significant harm in healthy patients undergoing straightforward abdominal surgery. (SMN 2010;1:17-20)