Dieting to lose weight appears insomnia is directly related to the following factors: 1, the appearance of hypoglycemic reaction, dieting to lose weight because of insufficient intake of calories and calories, especially the intake of carbohydrates will be insufficient at night paroxysmal hypoglycemia. At this time there will be palpitations, chest tightness, shortness of breath, dizziness, headache, profuse sweating, accompanied by body tremors and other clinical symptoms, but also clinical manifestations of insomnia. 2, dieting to lose weight will lead to plant nerve dysfunction, which will lead to insomnia, palpitations, dizziness, headache, and in severe cases, also lead to sleep dreams and other obvious symptoms of neurological disorders. 3, dieting to lose weight will make the gastrointestinal tract secrete excessive bile and digestive juices, resulting in bile reflux gastritis, excessive secretion of gastric acid, and thus clinical symptoms such as nausea, acid reflux, and heartburn during sleep, thus leading to insomnia.