The utility model provides a multi-dimensional force sensor based suspension characteristic testbed comprising two test shafts. Each test shaft comprises two test frustas each of which comprises a base, a vertical slide block, a transversal slide block, a longitudinal slide block, a rotary block, a multi-dimensional force sensor and a wheel support surface, wherein the vertical slide block is connected with the transversal slide block through a transversal slide rail, the longitudinal slide block is connected with the transversal slide block through a longitudinal slide rail, the longitudinal slide block is connected with the rotary block through a rotary slide rail, the multi-dimensional force sensor is arranged between the wheel support surface and the rotary block. The testbed not only can shorten test period and increase testable characteristic parameter, but also can greatly reduce the use number of force sensors, simplify the design and installation of the testbed, and reduce the maintenance cost, more significantly the testbed can obtain bearing condition of wheels in a most direct mode, with high accuracy of test data.