White phlegm is mostly caused by cold evils obstructing the lungs, or insufficiency of spleen yang, where dampness gathers into phlegm and goes up to the lungs. It can be treated with Chinese medicines such as Xiaoqinglong Granules, Ercheng Pills and Liujunzi Pills after identification of the symptoms. 1. Xiao Qing Long Granules: containing ephedra, cinnamon sticks, white peony, dry ginger and other traditional Chinese medicines, it has the functions of relieving the surface and resolving drinks, relieving cough and calming asthma (stopping cough and calming wheezing), and it can be used to treat wind-cold and watery drinks, fever, fear of cold, lack of sweating, and wheezing, coughing and thinning of phlegm and other illnesses. Its adverse reactions and contraindications are not clear. Avoid smoking, alcohol and spicy, cold and greasy food during the period of taking the medicine. This product is not suitable for people with internal heat, cough and asthma, and should not be taken at the same time tonic Chinese medicine. 2. Er Chen Pill: containing Chen Pi, Semen Xie, Poria and other traditional Chinese medicines, it has the effect of drying dampness and resolving phlegm (removing phlegm in the body with dampness-drying medicines), regulating qi and harmonizing the stomach, and it can be used for treating coughs and phlegm caused by phlegm-dampness stagnation, distension of the chest and epigastric area, and nausea and vomiting, etc. The adverse effects and contraindications of this medicine are still unknown. The adverse effects and contraindications of this drug are not clear. Avoid smoking, alcohol and spicy, cold and greasy food during the period of taking the medicine. If dry cough occurs due to lung yin deficiency, this product should not be used, and allergic to this product is prohibited, allergic people need to be cautious. 3. Liujunzi Pill: Containing Radix Codonopsis, Atractylodes macrocephala, Poria and other traditional Chinese medicines, this product has the effect of tonifying the spleen and benefiting the vital energy, drying dampness and resolving phlegm, and can treat weak spleen and stomach, low food intake, phlegm in deficiency of vital energy and diluted stools and other illnesses. Adverse effects of this product are not clear. It is contraindicated for pregnant women, not suitable for those with deficiency of spleen and stomach yin (deficiency of yin in spleen and stomach), and avoid eating cold, greasy and indigestible food. If you have a cough with white phlegm, you should seek medical advice from a doctor to determine the treatment plan after diagnosis, do not blindly use the medicine by yourself.