Cough is a common symptom of lung cancer，which seriously affects the quality of life of patients.Professor Lin Hongsheng analyses and summarizes the pathogenesis of cough caused by lung cancer from the perspective of five Zang-organs，and believes that the internal accumulation of cancer toxin is the fundamental cause of cough caused by lung cancer.Professor Lin combines disease differentiation with syndrome differentiation in clinical practice to classify lung cancer-related cough into the internal accumulation of cancer toxin syndrome，heat toxin stagnation syndrome，lung and spleen deficiency syndrome，phlegm dampness and internal obstruction syndrome，and liver depression and qi stagnation syndrome，qi deficiency and blood stasis syndrome，yang deficiency and phlegm obstruction syndrome，and liver and kidney yin deficiency syndrome.Professor Lin is good at using Fritillariae Cirrhosae Bulbus to treat various syndromes of lung cancer-related cough through compatibility.