Abstract:Abstract Objective: To investigate the mechanism of silver needle therapy in the treatment of myofascial pain syndrome (MPS) rats by non-targeted metabolomics. Methods: Local blunt blow combined with eccentric exercise established myofascial pain syndrome(MPS) rat model, mechanical withdrawal threshold(MWT) was detected during modeling and treatment, the pathological morphological changes of local muscle tissue were observed by hematoxylin-eosin staining, and the metabolic profiling of local muscle tissue was detected by ultra-high performance liquid chromatography coupled with high-resolution mass spectrometry, and the metabolic changes related to the treatment of silver needle therapy were explored. To explore the possible mechanism of silver needle therapy in the treatment of MPS. Results: Compared with the model group, the MWT in the treatment group was significantly reduced, and the pathological morphology was significantly improved. Metabolomics identified the main metabolic pathways involved in intervention mechanisms included choline metabolism, glycerophospholipid metabolism, tryptophan metabolism and so on. Conclusion: The mechanism of silver needle therapy in the treatment of MPS involves local muscle tissue choline metabolism, glycerophospholipid metabolism, and tryptophan metabolism.