Abstract: Traditional Chinese Medicine Master Liu Jiaxiang proposed the theory of reinforcing healthy qi and treating cancer in 1970s and held deficiency of healthy qi as the cause of lung cancer, deficiency of spleen and stomach as the source of healthy qi deficiency and the damage of spleen and stomach as the complication of lung cancer. The paper summarized professor Liu's experience of treating lung cancer, including treatment based on syndrome differentiation and prescription method, which manifested his therapeutic orientation to treat lung cancer with regulating spleen and stomach.