Green phlegm and yellow-green phlegm easily appear at the same time, Chinese medicine believes that they both belong to heat, not cold, why this color belongs to the heat image, because Chinese medicine believes that the color of phlegm is generally manifested as the heat effect of the internal organs, such as the most common lung heat, liver heat, bile heat, stomach heat, heart fire leading to the depletion of fluid, that is, water loss, phlegm concentration, phlegm itself contains protein, protein in the heat of the fumigation will become The phlegm itself contains protein, and the protein turns yellow or green under the heat. Seeing this situation, Chinese medicine practitioners will give the way to clear heat and phlegm, clear heat and detoxify the bowels, clear the urine, vent the bowels and pull the bottom out of the bowels, so that the heat of the lung, liver and kidney and even the heart fire can be cleared to a certain extent, so that its color will change.