The present application provides a soil-rock fault simulation device, comprising a base, a support arm, a first box body and a second box body; the first box body is movably mounted on the support arm and moves in a left and right direction to facilitate the movement of the first box body relative to the second box body in the left and right direction; the first box body moves in a forward and backward direction relative to the second box body as the support arm moves in a forward and backward direction relative to the base, and the first soil-rock in the first soil-rock space forms a forward-backward direction fault as the first box body moves in a forward and backward direction relative to the second box body; the fault simulation effect of soil-rock fault simulation device is improved.