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PURPOSE : A support for the trees lining a street is provided to allow the external appearance of the surrounding of roads to be arranged neatly and to allow a young plant to grow up stably and straightly.CONSTITUTION : A support for the trees lining a street comprises a main body(100) which is provided with a supporting wall(110) stood vertically to the ground to form a flowerpot-like frame whose upper and lower parts are opened and to form a space part inside, a buried part(120) extended from the lower part of the supporting wall, a plurality of engagement holes on the supporting wall to protect the accommodated earth and sand, and a guide pipe to be combined with the supporting part; and a supporting part(200) which is provided with a binding part(211) corresponding to the guide pipe engagement holes of the main body to be combined, and a supporting axis(213) formed at the other side of the binding part so as to connect the binding part and the supporting plate.© KIPO 2009