Pleural effusion belongs to the category of “hanging drink” in Chinese medicine, which has more causes and more types, and needs to be treated according to different types of evidence. 1.evil offending chest and lung evidence: symptoms include pain in the chest and lung, especially when breathing and turning the side, and can be accompanied by coughing and shortness of breath or fever, often manifested as sweating and heat does not resolve, while there can be bitter mouth, dry throat and other symptoms The pulse is stringy. At this time, the main treatment should be to relieve Shaoyang and promote the central mechanism, such as adding and subtracting on the basis of Chai Hao Hanxia Tang; 2, drink stopping chest and hypochondriac evidence: symptoms include chest and hypochondriac pain, coughing and shortness of breath, the patient often can not lie down or can only lie on one side, the intercostal distension on the side of the disease, in severe cases can be seen on the side of the thoracic augmentation, view the tongue can be seen white and greasy, the pulse is sunken string or string smooth. At this time, the treatment should be based on the formula of diarrhea of the lung and drink, which can be added or subtracted on the basis of ten jujube soup; 3, heat toxin knotted chest evidence: symptoms include high fever, or see chills, patients often report their chest pain, chest tightness, weakness, may be accompanied by shortness of breath, cough, fullness of the thorax on the side of the disease, red tongue with yellow coating, pulse count. At this time, the main treatment should be to clear heat and detoxify the lung and drain pus, for example, Wu Wei Disinfectant Drink combined with Scutellaria Baicalensis plus reduction. 4, phlegm and stasis obstruction evidence: symptoms include chest tightness and pain, coughing and shortness of breath, especially serious when moving, the patient is often sick for a long time, fatigue and tiredness, the face has no color, look at the tongue can be seen dull tongue or petechiae, tongue coating white smooth, the pulse is stringent and astringent. At this time, the main treatment should be to tonify the qi and lung, disperse the nodules and eliminate the drinks, which can be added and subtracted with reference to Jiao Mu Gua Pou Tang combined with Zhong Zhong Yi Qi Tang; 5. In this case, the main treatment should be to nourish Yin and clear heat, such as Sha Shen Mai Dong Tang plus reduction. Chinese medicine can be used as an adjunct to treat pleural effusion, which can help suppress the patient’s condition and improve the patient’s immunity, with fewer side effects compared to western medicine, and is more suitable for patients to take for a long time. However, it should be treated under the guidance of a professional physician, otherwise it may aggravate the condition.