in order to exploit the salt-tolerance ability of Chionanthus retusue,The plant growth, distributionpattern of Na_⁺ and K_⁺ and relative conductivity and osmotic adjustment substances of Chionanthus retusuewere studied under different concentrations(50, 100, 200, 300 mmol?L-1) of NaCl solution with potted two-year seedlings. The results show that with the increase of NaCl concentration, the seedling growth of Chionanthus retusue decreased gradually, the salt damage index increased and the survival rate decreased. Salt tolerance threshold was 98.693 mmol?L-1 (0.577% w/v). The content of Na+ in every organ of Chionanthus retusue increased continuously. At 50mmol?L-1, Na_⁺ content in root > leaf > stem, and Na_⁺ content in other treatments was leaf > root > stem. The content of K_⁺ in roots and leaves increased first andthen decreased. The content of K_⁺ in stems decreased in general. The content of K_⁺ in roots > leaves > stems was higher than that in leaves. The ratio of K_⁺/Na_⁺ in S_K,Naand organs decreased from root to stem,from stem to leaf. With the increase of NaCl concentration, the content of soluble sugar and soluble protein in leaves increased in general; the proline content showed an upward trend and then a downward trend. It is concluded that under Salt Stress. The root system of Chionanthus retusue seedlings can balance the damage of salt stress by enlarging the root growth; the root system can prevent the salt damage by absorbing and accumulating Na_⁺ to the above-ground parts; the leaf and stem can increase the selective absorption and accumulation of K_⁺, thereby increasing the ratio of K_⁺/Na_⁺ to slow down the physiological metabolism of salt damage.