[Objective] This research aimed to investigate the effect of salt stress on the growth of wheat seedlings.[Mathod] Weed seedlings were treated under salt concentration of 150 mmol/L with different time,the physiological indicators were measured and the micro-structural changes were observed.[Result] The results indicated that salt stress had certain degree influence on height and leaf width in an early stage(>8 d),however the influence on leaf length and leaf number was delayed(>12 d).Paraffins indicated th...