The salt-sensitive buckwheat variety‘TQ-0808’was used as experimental material and it was treated with NaCl added different concentrations of ABA and ethephon. The effects of ABA and ethephon on salt tolerance of buckwheat seedlings were studied through measuring the salt-tolerant physiological indexes of buckwheat. The results showed that the appropriate concentrations of ABA and ethephon could obviously decrease the plasmalemma permeability and MDA content of buckwheat leaves under salt stress, and that could also obviously increase the SOD activity and net photosynthetic rate of buckwheat leaves under salt stress. It indicated that the ABA and ethephon could significantly improve the physiological characters of buckwheat seedlings under salt stress, especially the concentration of ABA and ethephon at 20 μmol/L and 1.5 m mol/L had the best mitigation to salt stress of buckwheat seedlings, and the effect of ABA was better than that of ethephon.