The product is equipped with light and music, and has the function of pulling the line, so that the baby can pull and walk, and the cognition of traffic knowledge, as well as the piano playing mode for switching a variety of musical instruments, and the wheels can be disassembled, so that the child has the hands-on ability; the triangular keys can switch three modes of the piano surface, including animal sound, musical instrument mode and piano mode; the square keys contain 3 English songs and 7 MIDI songs; The round button is the English traffic light traffic knowledge, the nose of the car can be pressed down to make a beep sound; the two sides of the car are provided with a gear rotation mode, the shape is corresponding, and the cognitive ability and the hands-on ability of the child are exercised.