Abstract: CaCl2solution of different concentrattion were sprayed on the leaves of potted Eriobotryajaponica seedlings, the effects were verified by the calcium pyroantimonate precipitation method.Then, the seedlings were artificially treated at-3℃for 1.5h, and the cold resistance-relating physiological indices of the leaf tissues were measured.The results showed that CaCl2solutions of 0.05-50mmol·L-1 could all managed to decrease the MDA contents and to increase the SOD, POD, CAT and APX activities.The SOD activity of the control group was significantly elevated by 26.70% by using 10mmol·L-1 CaCl2solution.Although the APX activity of the control was maximally increased by 6.392% via 25 mmol·L-1 CaCl2solution, the upgrowth was still not significant.Thus, spraying appropriate CaCl2solution besides water in orchards prior to cold-air outbreaks was conducive to augmenting the cold-resistance indices of Eriobotryajaponica seedlings, thereby minimizing the low-temperature damages.