An F-t curve simulation device comprises a driving member, a curve simulator, a driven member and a control device. The curve simulator comprises a sealed cavity having an inflation port and fixed to the driving member. The driving member moves the driven member so that the curve simulator impacts on the driven member. An F-t impact curve is formed in the control device according to the generated force and time in the impact. The F-t curve simulation device can adjust the initial pressure and the compression ratio of the air by changing the cavity and the air pressure in the cavity in order to control output force, and is large in adjustment range and convenient in adjustment.