With over 40 years of experience in the clinical prevention and treatment of malignant tumors with integrated Chinese and western medicine，Professor Lin Hongsheng has gradually developed a treatment system based on the theory of reinforcing healthy qi and clearing pathogen from the source.This system involves five treatment modes and five regulation modes.The article summarizes the theoretical explanation and analyzes the clinical effects of Professor Lin Hongsheng's five treatment modes for colorectal cancer，aiming to underpin the application of traditional Chinese medicine in the staged treatment of colorectal cancer and provide references for inheriting Professor Lin' s academic thoughts and clinical experience.