Abstract：‘8398’cabbage（Brassica oleracea var. captata L.）plants with 7 true leaves and‘Jingfeng No.1’cabbage plants with 9 true leaves were vernalized in incubator. Then,‘8398’cabbage plants vernalized for 18 days and‘Jingfeng No.1’cabbage plants vernalized for 21 days were treated by high temperature of 37 ℃ for 12 hours to explore the changes of endogenous hormone during devernalization in cabbage. The results showed that: GA3 content had less changes, IAA content rose and ABA content decreased during devernalization. Compared with CK（vernalization period）, GA3 and ABA content decreased significantly, whereas IAA content rose significantly when devernalization ended. Lower GA3 and ABA content, and higher IAA content can benefit the accomplishment of devernalization.
