The causes of heavy dampness include feeling external dampness and spleen deficiency. Feeling external dampness: It is mostly caused by humid climate, rain and water or damp living environment. This is a case of external dampness, and the patient often manifests joint pain, muscle pain, cold (fear of cold) fever, heavy and painful body, chest tightness and so on. Spleen deficiency: The spleen is the main transporter (the spleen has the function of digesting food and drink, absorbing food essence and water and transferring it to the whole body), which has a significant impact on the transmission and distribution of water in the body. If the spleen qi is weak (spleen qi is weak) and loses the ability to transport and transform water and dampness, there will be obstacles in the distribution of fluid, and water-dampness and phlegm-drinking (pathological products of impaired metabolism of water and fluid) will gather in the body, manifesting as poor appetite, chest tightness and discomfort, and loose stools. If the above symptoms occur, it is recommended to consult a doctor in a timely manner, under the guidance of a physician to standardize the treatment, not self-medication.