Objective： To determine AR-Ⅰ content in total furostanol saponins of Asparagus cochinchinensis. Methods： High performance liquid chromatography （HPLC） was used and the condition was： Diamonsil C18 column （5 mm×250 mm, 5μm）, mobile phase： CH3CN-H2O （36 ： 64） ：flow rate： 0.8 ml/min; injector volume：20μl;colum temperature： room temperature. Evaporative light scattering detector（ELSD） condition was： drift tube temperature： 40℃, and nebulizer gas pressure （N2） ： 2.0×10^5 Pa. Results： The linearity was good when AR-I was within the range of 0. 094-0. 940 0 g.L^-1 （r=0. 999 2）. The test had higher sensitivity and good stability. The average recovery was 101.3% （n= 6）and RSD was 2.36%. Conclusion： HPLC-ELSD is practical and reliable for the determination of the furostanol saponins of Asparagus cochinchinensis