The invention discloses a sand barrier with efficient sand fixation and ecological restoration functions. The sand barrier integrally shows as an S shape, the cross section of one side of the sand barrier is a straight edge slope, and the cross section of the other side of the sand barrier is a gradient descending slope; and holes communicating with the bottom are formed in the highest slope of the gradient descending slope. The arrangement mode of the sand barrier is characterized by arranging the sand barrier side by side in a staggered mode with the spacing range of 2-2.5m and the row spacing range of 3-5m. According to the tests for the sand barrier with the efficient sand fixation and ecological restoration functions which are made in Dunhuang, Zhongwei and the like for more than three years, the results show that the quicksand is just pushed forwards by 2-5cm and belongs to be actually fixed, the clay crust naturally taking shape in the vortex is about 3 mm, a large number of annual sandy plants including agriophyllum squarrosum, artemisia songarica schrenk and the like are grown on the surface of the crust, and the number of the annual sandy plants in each sand barrier is about 5-12, so that the growth of the sandy plants not only show that the sand fixation method is successful, but also the wind speed can be reduced by the sandy plants; and after three years, the sandbarrier is still existing in an intact condition and does not need to be constructed again.