The present paper reports the contents of ursolic acid in Crataegus pinnatifida var.major before and after processing determined by CS-920 TLC scanner: 0.274% and 0.265%, coefficients of variation 1.180% and 1.150% respectively.

• 用薄层扫描法测得生山楂和焦山楂中熊果酸的含量分别为0.；274%25和0