Bronchitis belongs to the Chinese medicine “cough” “phlegm evidence” and other categories, Zuo Gui Wan can treat chronic bronchitis in the elderly identified as a deficiency of kidney yin, Zuo Gui Wan has the main water, cultivate the left kidney yin effect, can be symptomatic treatment. Zuo Gui Wan is composed of Radix Rehmanniae Praeparata, Semen Cuscutae, Radix Achyranthis Bidentatae, Radix et Rhizoma Gastrodiae, Radix et Rhizoma Gastrodiae, Radix et Rhizoma Gastrodiae, Cornu Cervi Pantotrichum and Fructus Lycii. It has the effect of nourishing the kidney and tonifying yin. It is used for the deficiency of true yin, lumbago and knee weakness, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), fatigue (lack of spirit), dryness of mouth, blurred eyes and deafness. Therefore, Zuo Gui Wan can be used for the treatment of chronic bronchitis in the elderly identification of real yin deficiency, but bronchitis Chinese medicine identification of the type of wind-cold attack on the lungs, phlegm-dampness congestion of the lungs, phlegm-heat congestion of the lungs, the spleen and lungs, etc., these types of patients can not take Zuo Gui Wan treatment of this disease. It is recommended that patients should take the drug under the diagnosis of a professional Chinese medicine practitioner, and should not use the drug privately to avoid delaying the condition.