The invention relates to a pull rod-bending resistant steel plate combined soil box analog device, which comprises pile foundations, hoops, a pull rod and a bending-resistant steel plate and a counter-force steel column, wherein each pile foundation is connected with the bending-resistant steel plate through the hoops, screws, internal thread sleeves and the pull rod; the fixed end of the bending-resistant steel plate is connected with the counter-force steel column; a plurality of hoops can be fixed on the pile foundations; the hoops are fixed through the screws and nuts; the outer sides of the nuts are provided with the internal thread sleeves; an expended head at one end of the pull rod is arranged in cavities of the internal thread sleeves connected with the hoops, and the other end of the pull rod passes through a preformed hole of the bending-resistant steel plate and connected with the bending-resistant steel plate through clamp nuts; and the counter-force steel column is connected with a transition steel plate at the bottom of a soil box through welding or bolting. Compared with the conventional soil box, the soil box analog device solves the great problem that confining pressure constraint conditions of model soil under a gravity field of the conventional soil box are hard to be similar to those of undisturbed soil. The soil box analog device has diversified installation modes, reduces technical requirements and site condition restriction of loading equipment and expands the engineering application range of the loading equipment.