Abstract: In order to explore the Kalidium foliatum adapting to desert arid saline alkali environment, the effects of different temperatures, salt concentrations and light（alternating light and dark and total darkness） on the germination of Kalidium foliatum seeds. The results showed that low temperature or high temperature could significantly inhibit the germination of K. foliatum seeds. The suitable temperature for seed germination was 25 ℃/10 ℃ or 30 ℃/15 ℃; Under the same temperature and light, the germination rate and germination index of K. foliatum seeds decreased with the increase of salt stress concentration; There was interaction between temperature and salt on the germination of K. foliatum seeds. Low temperature or high temperature significantly reduced the salt tolerance of K. foliatum in seed germination period; At the same temperature, there was a significant difference in seed germination rate between light dark alternation and total darkness. At the appropriate temperature（30 ℃/15 ℃）, the critical values of salt tolerance of alternating light and dark and all dark seeds were 393.6 mmol/L and 259.0 mmol/L, respectively, and the limit values were 664.7 mmol/L and 403.3 mmol/L, respectively. Light significantly improved the salt tolerance of K. foliatum seeds during germination. Therefore, temperature and salt could be used as the main ecological factors during seed germination, and light could also be used as severe ecological factors.