[Objective]The aim of the study was to provide basis for rational exploitation and comprehensive utilization of caprifoliaceace medicinal plant resource. [Method]The chlorogenic acid content of different varieties of Lonicera japonica was compared using UV spectrophotometer in different florescense. [Result]The study showed that the chlorogenic acid content of Guizhou Lonicera pileata Oliv and Henan Lonicera japonica Thunb was reduced with the stage developing. The chlorogenic acid content of Guizhou Lonice...