OBJECTIVE: To optimize the extraction technology of Qufeng granules and establish the thin layer chromatography identification method for the main components. METHODS: The dry extract rate and cimicifuga glycoside content were used as evaluation indicators

and orthogonal design was used to optimize the extraction process. Three batches of pilot sample particles were used for thin layer chromatography. RESULTS: The extraction technology was decocting and extracting for twice

12 times of water was added each time for 60 minutes

and soaking was performed for 30 minutes before the first decoction. The thin layer chromatography identification method for the three drugs of astragali radix

polygoni multiflori radix praeparata and coptidis was established. CONCLUSIONS: The extraction technology is reasonable and feasible

and the thin layer identification method has good reproducibility and can be used as a quality control method.