Abstract: An auxiliary weight supporting device includes a back rack, a walking-stick and a connecting rod. The back rack is configured for the user to wear and for carrying an object. The walking-stick includes a main body and a gripping part and a contacting end configured at two ends of the main body respectively. The gripping part is configured for the user to hold, and the contacting end is configured to touch the ground when the user is walking. The connecting rod has a first end connected to the main body and a second end coupled to the back rack. The walking-stick is controlled by the user to support the ground and swings back and forth in accordance with the user's steps. The connecting rod drives the back rack to rise when the walking-stick swings backwards.