Bai Cao Ling should be Bai Ling Cao, which has the efficacy of dispelling wind and removing dampness (dispelling wind and dampness in the body), and has the effect of treating rheumatism and paralysis, bruises and other diseases. Bai Ling Cao is sweet, slightly bitter, warm in nature, and is the whole plant of Bai Ling Cao of the family Lauraceae, which has the efficacy of dispelling wind and removing dampness, calming asthma, activating the blood and opening the channels, and is mainly used for the treatment of rheumatism and paralysis, rheumatic heart disease, bronchial asthma, bruxism, bone fracture and other diseases. The adverse reactions and contraindications of taking Bailin grass are not clear, note that pregnant women should take with caution. The drug should be taken under the guidance of a professional doctor, such as taking the process of discomfort symptoms, to the hospital in a timely manner.