Pei Pa Koa water can play a role in clearing away heat and cough, clearing the throat and moistening the lungs, and is contraindicated for those who are weak in the spleen and slippery, and overdrinking can also cause diarrhea, indigestion and other side effects. Pei Pa Koa is the fruit of Pei Pa Koa, family Rosaceae. It is sweet, sour and cool in nature; it belongs to the spleen, lung and liver meridians. It has the effect of moisturizing the lungs, quenching thirst and lowering qi. The main treatment for lung dryness cough, thirst, vomiting. Pei Pa Koa Water with Rock Sugar can moisten the lung and relieve cough. Because loquat is cold in nature, so it should not be eaten more, more food is easy to help dampness and phlegm, diarrhea, etc. Spleen deficiency and diarrhea (diarrhea caused by weak spleen function) should be avoided. It is recommended to consume Pei Pa Koa water with rock sugar under the guidance of a doctor.