The invention belongs to the technical field of body building equipment, and particularly relates to an abdominal muscle training device capable of loading weight. The device comprises a front support rod, a rear support rod, a connecting rod, a stand column, a backing plate hinge rod, a sitting height hinge rod and a leg support rod, one end of the connecting rod is fixedly connected to the middle of the front support rod, the other end of the connecting rod is fixedly connected to the upper portion of the stand column, a limiting component is fixedly connected to the end face, close to the front support rod, of the connecting rod, the top of the stand column is hinged to one end of the backing plate hinge rod, a sitting plate is fixed to the upper portion of the free end of the backing plate hinge rod, a backing plate is hinged to the rear end of the sitting plate, two should straps of the same structure are detachably installed on the left edge and the right edge of the upper surface of the backing plate, at least one loading hole is formed in the position, between the two shoulder traps, of the backing plate in the extension direction of the plate, and cover plates are detachably installed at the loading holes. Accordingly, on one hand, weight loading operation is easy and safe; on the other hand, multiple dumbbell pieces can be loaded as needed, and the training requirements of most trainees can be met.