A reed structure with an echo valley is provided to produce long and beautiful sound by repeating echo processes inside an echo valley space. A reed structure with an echo valley comprises: a barrier wall(21,21') formed on the exterior wall into a tubular reed; a mouth-piece connected from the outside section of an upper orbit(23) inner side to an inner air chamber(24); two side orbits(25) formed on both sides of the mouth-piece; an echo valley(27,27') formed by coupling the coupling surface of the exterior wall other side to a bamboo stick(30); and a second barrier wall(26,26') formed between the mouth-piece and the barrier wall. The second barrier wall is extended from the upper orbit to the inside of the air chamber. The second barrier wall forms constant angle to the barrier wall. The sound is resonant with the angle between the second barrier wall and the barrier wall.
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