Summarize recent 20 years' achievements in studying literature of channels and collaterals, analyze the problems in literature studies of collaterals and comment on literature studies of collaterals, and hold that systematical summarization and study of traditional theories of collaterals can explore collateral theory and its clinical application value, and summarization of literature should refine and raise theoretical structure and scientific connotation of the collateral theory, and serve for modern studies of collaterals and collateral diseases on the basis of systematical summarization and studies of traditional literature of collaterals.