A multifunctional wall toy with a cute image of a caterpillar, including wire beads, rolling disc with sound and nice patterns, lock toy and turning gears. The body is divided into 5 parts which is easy to disassemble, install and transport. There are different kinds of toy functions on each wooden board. If damaged, that part can be changed for a new one separately. The eyes of the caterpillar could be flapped, so different expressions will be shown, which cultivates children’s emotional cognitive skills. Turn the discs on the second board to get amazing visual effects, different patterns will be seen under different rotation speeds. On the third board the kids could learn about the change on colors with different combinations of the three primary colors (red,yellow and blue). Open the lock, different colors correspond to different materials (EVA, velcro, mirror, felt cloth, corrugated card). The last board is not an ordinary easy gear, the kids can combine different gear structures by themself through the track, and make the gears link together. Several children could play together and share happiness, they can not only play for fun but also learn a lot, such as basic ideas of colors, sound, graphical. It also can develop hand-eye coordination ,social skill and tactile skill. A perfect and brilliant toy combination for schools, kindergartens, learning center and public areas.