Double-purpose leg training device

The invention discloses a double-purpose leg training device. The double-purpose leg training device comprises a ground-attaching frame, a balance weight device, a pedal, a vertical frame, a swing frame, an adjusting frame and a bearing frame. The weight balance device is located on one side of the ground-attaching frame, the pedal and the vertical frame are fixed to the ground-attaching frame, the bearing frame is connected to the upper portion of the vertical frame in a rotatable mode, the swing frame is connected to the bearing frame in a rotatable mode, one end of the adjusting frame is fixed to the swing frame, the other end of the adjusting frame is inserted into a through hole formed in the bearing frame, pin holes are formed in the side walls of the bearing frame and internally provided with a pin, a plurality of positioning holes are formed in the adjusting frame, the pin is inserted into the positioning holes, and the bearing frame is connected with a balance weight part in the balance weight device