Telescopic limiting structure, camera body, and camera

A telescopic limiting structure comprises a first direction telescoping member and a second direction telescoping member (30). The first direction telescoping member is provided with a first inclined surface, and the second direction telescoping member is provided with a second inclined surface. The first inclined surface abuts against the second inclined surface, so that the first direction telescoping member drives the second direction telescoping member (30) to retract along the second direction when the first direction telescoping member retracts along the first direction; and the second direction telescoping member forms the limiting structure when the second direction telescoping member stretches out. A camera body provided with the telescopic limiting structure, and a camera (300). The telescopic limiting structure (100) makes press operations of disassembling and assembling a lens more convenient.