This article introduces the clinical experience in the treatment of primary bronchogenic carcinoma（ in short

lung cancer）. WANG Shuchen holds that

the doctors should differentiate the excess or deficiency and combine the disease and syndrome based on the changing features of Qi

blood

phlegm

toxin and deficiency in different stages. When lung cancer is localized

the doctors should combines the disease and syndrome

detoxin and dissolve the stasis

so that to prevent the cancer toxin going inside and metastasis; when there is metastasis

the doctors should strengthen the immune system

keep Yin-Yang balance

so that the patient could live with the cancer toxin. After the resection of cancer lesions

the doctors should tonify vital Qi

and clear the remaining toxin

in order to prevent recurrence.