Spring portable decorative box and foldable supporting column

A spring portable decorative box, comprising:

• two frame bodies arranged up and down, a plurality of foldable supporting columns being arranged between the two frame bodies, the frame bodies and the supporting columns forming a stereoscopic supporting skeleton of the decorative box, and
• a lock structure being arranged between the two frame bodies, wherein
• the supporting column comprises two connecting rods and a spiral spring fixedly connected between the two connecting rods, the two connecting rods are both located on an axis of the spiral spring to make the two connecting rods and the spiral spring form a straight line, a pitch of a middle part of the spiral spring is smaller than pitches of two ends;
• and
• when the two frame bodies approach to form a folded state and the lock structure above is locked, the supporting column is bent at the middle part of the spiral spring, and when the lock structure is unlocked, the supporting column is capable of resetting to a straight state under an action of the spiral spring.