The invention relates to a vertical flexible barrier system for remediation of an ecological environment, the vertical flexible barrier system is a water-proof HDPE (high-density polyethylene) geomembrane wall, and the vertical flexible barrier system penetrates through an underground water layer below pollutants and is driven into a water-proof layer. By arranging the vertical flexible anti-seepage membrane wall, a pollution region can be thoroughly isolated from outside, the spread of pollution can be avoided, and surrounding soil and underground water can be effectively protected; and furthermore, the structure is simple and the construction cost is low.