[Objective] Sunflower was stressed by different salt treatments to study the effect of salt stress on growth and physiological activity of it. [Method] With sunflower 567 DW as material,effects of different concentration of salt( 0,0. 06,0. 12,0. 18,0. 24 mol / L) on sunflower growth and physiological activity were studied. [Result]With the concentration of NaCl increasing the morphological indexes of sunflower significantly decreased,MDA content also increased,Pr O and POD content first increased and then ...