‘Junzao’,‘Huizao’,‘Haomidazao’ and ‘Jinlingyuanzao’ which produced in Xinjiang were used as materials.They were immersed by different concentrations of CaCl² (0,2.5,25 g/L) at three stages(12,36,60 h) to study effects of CaCl² on,jujube cracking rate and Ca,K and Mg contents of fruit pulp and peel.The result indicated that:(1)Both 25 and 2.5 g/L CaCl² can effectively reduce the jujube fruit cracking rate,and the former was superior than the latter.(2)The Ca content of fruit pulp and peel in the highest crack resistance cultivar was higher than that in the lowest crack resistance.With increasing of CaCl² concentration,the Ca content was also increased.(3)The K content of fruit pulp and peel in the highest crack resistance jujube was higher than that in the lowest crack resistance.On the contrary,the Mg content of fruit pulp and peel in the highest crack resistance jujube was lower than that in the lowest crack resistance,but the K and Mg contents of fruit pulp and peel showed different change with different concentrations of CaCl².(4)The contents of Ca and K in fruit pulp and peel were negative correlated with fruit cracking rate.The Mg content of fruit pulp and peel were positive correlated with fruit cracking rate.The study showed that the jujube fruit soaked by CaCl² reduced fruit cracking rate,increased Ca content of fruit pulp and peel,and impacted K and Mg contents of jujube.