are used to reduce the weight of obese peoples. It reduces the weight by restricting the holding capacity of food in the stomach and it causes malabsorption of nutrients. There are many common bariatric surgical procedures are evolving. Gastric bypass, sleeve gastrectomy, adjustable gastric band, biliopancreatic diversion are the major surgeries. These procedures approximately reduce 40-50% of weight for an obese patient. Increasing rate of in people due to the modifications in our lifestyle increases the market values of bariatric surgery. Discuss the advancements of Biliopancreatic diversion with duodenal switch, Sleeve gastrectomy, Laparoscopic adjustable gastric banding, Roux-en-Y gastric bypass at Bariatric surgery session.