Abstract：This article introduces the clinical experience of Professor WANG Fu in the differentiation and treatment of tic disorder. Professor WANG Fu proposes a thought of differentiation and treatment of “identification of exogenous attack and internal injury being general principles， differentiation of zang- fu organ affection being detailed outline， and diseases are at the junction of symptoms”. He believes that external contractions and internal damages can both lead to tic disorders. External contractions are caused by insufficient healthy qi and repeated external contractions， mainly involving the lung system. Internal damages are caused by emotional failure and dysfunction of zang-fu organs，whose main responsibility lies with the heart and liver，and secondary responsibility lies with the spleen and kidney. In clinic，it not only emphasizes differentiation and treatment， and classification of treatment， but also emphasizes the combination of the differentiation of diseases and symptoms.