Damp phlegm and cold phlegm can be differentiated by the color, texture, cause and accompanying symptoms of the phlegm. For example, cold phlegm is white in color and thin in texture, while wet phlegm is white in color and slippery in texture. If patients feel phlegm in the throat, they should consult a doctor in time and take scientific treatment under the guidance of the doctor. 1. Etiology: Cold phlegm is mostly due to the obstruction of the lungs by cold evils, the normal fluid is stagnated and not transformed, and the phlegm is formed by aggregation, or the spleen is not sufficient in yang, and it can’t transport and transform the water and dampness, which gathers inside the body and encroaches on the lungs, and then forms the phlegm. Damp phlegm is mostly due to the fact that the spleen is the main transporter of water-dampness (the spleen has the function of digesting food, absorbing food essence and water and transferring it to the whole body). If the spleen’s transporter is not functioning properly, water-dampness stops in the body, which gathers into phlegm, and then goes up to the lungs, which is phlegm disease. 2. Accompanying Symptoms: Cold phlegm patients are often accompanied by symptoms such as coldness (fear of cold), fever, headache, itchy throat, cough, etc., or accompanied by symptoms such as cold extremities, abdominal pain, like warmth, like to be pressed, and loose stools, etc. Damp phlegm patients are often accompanied by symptoms of upper abdominal pain, like warmth, like to be pressed. Damp phlegm patients are often accompanied by distention and fullness in the epigastric region, lack of appetite, tiredness of the limbs, heaviness or swelling of the lower limbs, heaviness or swelling of the lower limbs, sticky stools, and fat tongue coating.