Disclosed is a simulation device for plants exposed to a shallow water wave environment for a long period of time, which can realize research on a physiological and biochemical response mechanism of the plants on a long time scale under different wave parameter conditions. The simulation device comprises a water tank (1), a plant cultivation box (2) built in the water tank (1), and a crank (3), a connecting rod (4) and a traction rod (5) which are hinged successively, with hinge shafts being parallel to each other, wherein the plant cultivation box (2) is connected to the non-hinged end of the traction rod (5), the crank (3) is connected to a power source (6), and the connecting rod (4) and the traction rod (5) drive the plant cultivation box (2) to perform a linear reciprocating movement in a horizontal direction at a sinusoidal changing speed relative to still water in the water tank (1), so as to simulate a state where plants are exposed to a shallow water wave environment for a long period of time.
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