Fat calories calories for 100g fat 900 kcal calories, 1g fat 9000 calories calories, the conversion formula is: 1 large calorie = 1 kcal = 4.184 kilojoules = 1000 calories. Fat is one of the three basic nutrients, play a physiological function such as storing energy, protecting internal organs and helping vitamin absorption. The Dietary Guidelines for Chinese Residents (2016) recommend that the recommended intake of livestock and poultry meat is 40~75g per day, either 1 tael per day or 3~5 times per week, totaling 280g~375g. The total fat intake of patients with hyperlipidemia is 40 grams per day, and obese people should not only reduce the total calorie intake, but also control the fat intake percentage of 20% to 30%, which should not exceed this ratio. Weight loss should also be diversified diet, to maintain nutritional balance, it is recommended that the nutrition department outpatient consultation.