The invention discloses a connecting structure including a first body and a second body. The first body is provided with an inserting opening, the second body is provided with an inserting portion capable of being inserted into the inserting opening, a first magnet is arranged on the inner periphery of the inserting opening, a second magnet matched with the first magnet is arranged on the inserting portion, and a magnetic pole on the inner periphery of the first magnet is the same as a magnetic pole on the outer periphery of the second magnet. By means of the structure, the first body and thesecond body can be quickly connected and fixed. According to the structure, the principle of same magnet repulsion is mainly used, and the closer the two bodies are, the stronger the damping feeling between the two bodies is; and when a critical point is past, the two bodies repel each other, and the self-sucking effect is achieved.