Tangerine boiled water is usually a faster way to stop cough and reduce phlegm. Wash kumquats in salted water, cut them into small pieces and place them in a pot of water and bring it to a boil. Once the water is boiling, continue to boil for about 20 minutes. When it is cold enough to drink, add an appropriate amount of honey and drink it 3 to 4 times a day to significantly relieve cough and phlegm. Kumquat cut into small pieces and dried, kumquat slices directly soaked in water, has the effect of moistening the lungs, cough, phlegm and so on. Kumquat and pear, loquat and rock sugar cooked at the same time, there is a better effect of cough and phlegm.