Upper and lower limb exercise device suitable for weightless environment

The invention provides an upper and lower limb exercise device suitable for a weightless environment, and relates to the technical field of training equipment, the upper and lower limb exercise device comprises a mounting frame, a resistance source is arranged on the mounting frame, a resistance shaft is rotatably arranged on the resistance source, a connecting rod is arranged on the resistance shaft, and a force application pedal is arranged at one end, away from the resistance shaft, of the connecting rod; a force application part is arranged on the force application pedal and used for driving the connecting rod to rotate, the force application part is detachably connected with the force application pedal, a binding assembly is arranged on the mounting frame and used for limiting the position of a trainee on the mounting frame, and a first connecting plate is fixedly arranged at the end, close to the force application pedal, of the force application part; a second connecting plate is arranged at the end, aw