Loquat can be stewed with rock sugar to play the role of cough and phlegm, but loquat is suitable for lung heat, lung dryness caused by cough, if other causes of cough is not suitable for loquat, it is recommended that the patient under the guidance of a doctor to use medication. Pei Pa Koa is the fruit of loquat, a plant of the Rosaceae family, sweet, sour, cool, to the spleen, lung, liver meridian. It has the effect of moistening the lungs and lowering the qi (moisturizing the lungs to bring down the upward lung qi) and quenching thirst, and is used to treat symptoms such as cough, asthma, yellow and sticky sputum, dry mouth and tongue, and liking cold drinks caused by lung heat. Since eating more loquats will help dampness and generate phlegm, it is not suitable for people with spleen deficiency and slippery discharge (diarrhea), and normal people should not eat too much. It is recommended that patients who feel unwell should seek prompt medical treatment.