Rales are sounds additional to breath sounds, due to lesions such as partial obstruction of the tracheobronchial tubes or lumen; depending on the nature of the sound, they can be divided into dry and wet rales. Then, the lungs appear rales, the patient diet to pay attention to what? 1, food should be light: fresh vegetables, such as cabbage, spinach, rape, radish, carrot, tomato, cucumber, winter melon, etc., not only can supplement the supply of a variety of vitamins and inorganic salts, but also has the function of clearing phlegm, fire, laxative; soybeans and soybean products contain high-quality protein needed by the body, can supplement the nutritional loss caused by chronic bronchitis on the body, and without the drawbacks of gathering phlegm and fire. 2, if the cough does not heal for a long time, consuming the vital energy, lung and spleen weakness. Therefore, usually use more food with spleen, lung, kidney, qi, phlegm, such as pig, cow, sheep lung and loquat, orange, pear, lily, jujube, lotus seeds, almonds, walnuts, honey, etc., to help strengthen the body and improve symptoms. 3, avoid eating sea fishy and greasy products. Because “fish fire, meat phlegm”, so should eat less yellowtail, scallops, shrimp, crab, fatty meat, etc., so as not to help fire phlegm. 4, do not eat irritating food: chili, pepper, garlic, onions, leeks and other spicy things, can stimulate the respiratory tract to aggravate the symptoms; dishes should not be seasoned too salty, too sweet, hot and cold to moderate.