Lemon’s role is as follows: 1, can be able to produce heat, because from the point of view of traditional Chinese medicine dietary therapy lemon taste sweet, sour, cool, there is a very good role in the production of fluids, for the summer heat injury, heat stroke, thirst, loss of appetite, appropriate consumption of lemon has a very good role in the production of fluids and summer heat. 2, can be and the stomach and the baby, for indigestion during pregnancy, the fetus restlessness of the people, appropriate consumption of lemon has a very good and the stomach and the baby. 3, can moisturize the lungs, for the cough caused by dryness, coughing phlegm, appropriate consumption of lemon has a very good moisturizing effect. 3, can moisturize the lungs and phlegm, for lung dryness caused by coughing, coughing phlegm, appropriate consumption of lemon has a good moisturizing effect of phlegm.