Boiling orange juice is usually a faster way to relieve cough and phlegm. Wash kumquat with salt water, cut it into small pieces, put it in a pot and boil it with water. After the water is boiled, continue to boil for about 20 minutes. When the weather is cold enough to drink, adding proper amount of honey and drinking it 3 to 4 times a day can obviously relieve symptoms such as cough and expectoration. Cut kumquat into small pieces and dry it. Kumquat tablets are directly soaked in water, which has the effect of moistening lung, relieving cough and resolving phlegm. Kumquat is cooked with Sydney, loquat and rock sugar at the same time, which has a good effect of relieving cough and resolving phlegm.