[Objective] To investigate doctor Xu Qing Lingtai’s vitality academic thought. [Methods] Using traditional philological research methods, through a careful reading medical books of Xu Lingtai, combined with various Chinese medicine theory, summarize his vitality academic thought. [Re-sult] The study refines that Xu Lingtaivitalityacademic thought can be summarized as: Xu thought vitality is the first righteous cause for doctors to treat diseases; doctors shal get to the bottom and care vitality. In theory, he viewed that the innate vitality comes before the blood and Qi. The true viscera essence is the sub-strength of vitality. In clinical thinking, he actual y applied the theory in 3 aspects:diagnosing diseases with vitality, evil and vitality com-bined and using warm-dry drugs with caution. [Conclusion] Xu Lingtai inherited the former based on the theory and put forwardstrength theory.Hisvitality theory is unique not only in the theory of traditional Chinese medicine essence, but also has great features in the clinical syndrome differentiation. Its doctrine has important reference value on clinical medicine.