A paper music box is a music device made of paper tape and steel needles. It consists of a box containing the musical mechanism and a crank that can be turned manually. A paper music box has a series of musical notes printed on the paper tape, each with a small hole in it. When the crank is turned, the steel needle will pass through the hole in the paper tape, touch the note groove below, and produce musical sound. By adjusting the rotation speed and rotation direction of the crank, different melodies can be played. Paper music boxes usually have exquisite appearance and cute designs, and are widely used for decoration and collection, and can also be given to friends or relatives as gifts. It brings people not only wonderful music enjoyment, but also evokes memories and emotions.