1, cold weather should pay attention to keep warm, to avoid cold and cold. 2.Quit smoking, avoid contact with smoke and irritating gas. 3, when the amount of sputum is large, it is appropriate to take the position of drainage (such as the lesion bronchus in the lower lobe to take the head low foot high potential), after the position, deep breathing, 10-15min after coughing out the sputum, several times a day, while adding chest percussion and other physical therapy methods. If the sputum is more than 30ml a day, it should be drained in the morning and evening. 4.Attention should be paid to rest during the acute period, and respiratory exercises and appropriate whole-body physical exercise can be performed during the remission period to enhance the body’s resistance and immunity. 5, eat more eggs, meat, fish, milk and fresh vegetables, fruits and vegetables. Suitable food to clear the lung and resolve phlegm, nourish Yin and reduce fire: loofah, winter melon, bamboo shoots, purple cabbage, tofu, bird’s nest, lotus leaves, mung beans, etc.