Objective To compare the content of stachydrine hydrochloride in herba leonuri from different areas and provide a reference for the quality research.Methods According to the Chinese Pharmacopeia of 2010 edition,the method of HPLC-ELSD to determine the content of stachydrine hydrochloride were adopted.Results The contents of stachydrine hydrochloride were obviously different in herba leonuri from different areas.The contents varied from 0.102% to 2.142%.Conclusion The results suggest that the herba lonuri planted in standardization artificial cul...