Duanzhuxiaobaqia is the dried rhizome of Heterosmilax yunnanensis Gagnep.which belongs to the genus Heterosmilax Kunth of family Liliaceae. Due to the effects of clearing heat, removing damp, counteracting toxicity, and improving the mobility of joints, it has been widely used for the treatment of Dysuria with turbid discharge, morbid leukorrhea, carbuncle, lymphadentitis, chronic eczema; contracture of limbs and muscle pain in syphilis and leptospirosis, etc. But its chemical constituents have be...