White phlegm mostly belongs to cold phlegm in traditional Chinese medicine, and medicines that warm and neutralize cold phlegm can be used, such as half-summer, tiannanxing, white mustard seed, cyclamen, and baiqian. Specific should follow the doctor’s instructions to take medication. 1. Semixia: pungent in flavor, warm in nature; toxic. It has the effect of drying dampness and resolving phlegm (removing phlegm from the body by drying dampness), and is an important medicine for warming cold phlegm and drying dampness and resolving phlegm. It can be used for treating damp phlegm and cold phlegm syndrome, which is characterized by white phlegm, clear and thin phlegm, and cough with a heavy voice. It should not be used with aconite herbs. It is not to be used in all blood diseases (non-physiological bleeding disorders) and those who have dry cough with deficiency of yin, or those who are thirsty with injury of fluid. 2. Tiannanxing: bitter, pungent, warm; toxic. It has the efficacy of drying dampness and resolving phlegm, and can treat stubborn phlegm and cough, wet phlegm and cold phlegm. Yin deficiency, dry phlegm and pregnant women should not be taken. 3. White mustard seed: pungent flavor, warm nature. It has the efficacy of warming the lungs and removing phlegm, and can be used to treat cold phlegm, asthma and cough. Lung deficiency cough, yin deficiency fire (body Yin essence loss, there is excessive fire) should not be taken. 4. Reptilia: bitter flavor, pungent, salty, slightly warm. It has the effect of lowering qi and eliminating phlegm, and it can treat cough with much phlegm. 5. Bianqian: pungent, bitter flavor, slightly warm in nature. It has the efficacy of lowering qi and eliminating phlegm, and can be used for the treatment of phlegm-whitening and other diseases. The adverse reactions of the above drugs are not clear. If white phlegm occurs, it is necessary to consult the clinician in order to avoid delaying the condition.