PURPOSE: A variation prevention unit for the front part of vegetation reinforced soil and a construction method of vegetation reinforced soil using the same are provided to completely treat variation in real-time through re-tension. CONSTITUTION: A variation prevention unit for the front part of vegetation reinforced soil comprises swelling preventers(100), connecting support bars(200), vegetation plate members(300), a resistance plate(400), a steel wire(500), and wedge members(600). The swelling preventers are continuously arranged on a slope. The connecting support bars are connected to the swelling preventers and reinforce the slope. The vegetation plate members are coupled to the front and rear surface parts of each latticed form formed by the swelling preventers and the connecting support bars. The resistance plate has a convex plane(404) and insertion holes(402). The steel wire is inserted into one insertion hole of the resistance plate and drawn out of the other insertion hole. The wedge members are coupled to one and the other ends of the steel wire and coupled to the swelling preventers.
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