This paper studies the effect on wax gourd(Benincase hispida Cogn.)seed vigor and its physical characteristics treated by salt solution priming with 10 mmol·L^-1 CaCl₂，NaCl，KNO₃，KH₂PO₄，CaCl₂+NaCl(1∶1)，KNO₃+KH₂PO₄(1∶1).The results showed that 10 mmol·L^-1 KNO₃ solution could significantly improve seed vigor and promote seed germination.The seed germination energy,germination percentage,simplified vigor index,activities of SOD and CAT could be raised by 4.0 %，14.7 %，60.0 %，53.2 %，78.7 % respectively,and the electrical conductivity was reduced by 51.2 %。