In order to reveal the feasibility of exogenous SA relieving the damage of high temperature stress on Fritillaria anhuiensis and to study chronergy,potcultured F.anhuiensis seedlings were foliage sprayed 0.5 mmol/L SA 1,3,5,7 days before being placed under high temperature (36℃)stress for 24 hours,and then those treated materials were transfered in normal condition (day 25℃/night 20℃) for growth recovery for 48 h.The result showed that:Within 3 days,the foliage sprayed SA significantly increased the content of chlorophyll a and soluble protein,effectively reduced relative conductivity and the content of MDA;at the same time,the foliage sprayed SA enhanced the activity of SOD and POD,but the activity of CAT were negatively influenced.The above action effects were obviously weakened 5 days after the foliage spraying of SA.Moreover,those action effects were almost lost 7 days after the first spraying.We can conclude that foliage sprayed 0.5 mmol/L SA could effectively relieve the damage of high temperature stress on F.anhuiensis leaves by increasing the content of osmoregulation substance and the activities of protective enzymes,and that it was efficient within 3 days.