According to the investigation and analysis, the heat of an ordinary steamed dumpling with vegetarian stuffing or meat stuffing in the north (16) is 450-500 calories, which is equivalent to 1/3 to 1/4 of the energy consumed by adults all day. In other words, jiaozi should control the taste. In addition, some surveys show that the fat content of most kinds of northern jiaozi is over 30%. Therefore, it is suggested that it is best to pack jiaozi with one portion of meat and three portions of lettuce without squeezing juice, so as to reduce the amount of oil and salt, which is more in line with nutritional requirements. In cooking methods, steaming loses less nutrition than boiling. When cooking jiaozi, don't pour jiaozi soup. Northerners say that "the original soup becomes the original grain", which is explained by modern nutrition. When jiaozi cooks, many water-soluble vitamins are dissolved in water, especially B vitamins. Drinking jiaozi soup is also a way to reduce the waste of nutrients in soup. For people who need to control their diet, eating soup first can also make people feel full to a certain extent, and slow down the speed of eating without eating too much, which is also the popular reason for "drinking soup before meals to lose weight and be healthy".