Extensible bridge

The embodiment of the invention provides an extensible bridge. The bridge can be folded or stretched and includes bridge deck slabs, a hinge shaft, bridge feet, a tension member, a supporting rod anda locking hook, the bridge deck slabs are connected with each other through the hinge shaft to form a scissor structure, the bridge deck slabs are arched after the scissor structure is unfolded, and the bridge feet for contacting with the ground are arranged on the two ends of the bridge; and the locking hook is arranged at the hinge shaft of the upper end portion of the bridge deck slabs at the two end faces of the bridge, the locking hook can connect the hinge shaft of the neighbor bridge deck slabs in the longitudinal direction to achieve structural locking after the bridge is unfolded, andthe tension member is connected with the bridge feet connecting the two ends of the bridge and the supporting rod on the bridge so that the arch structure of the bridge body is more stable and the bearing capacity is stronger