Space small mechanical arm tail end executing device

The invention discloses a space small mechanical arm tail end executing device, and belongs to the technical field of space. The space small mechanical arm tail end executing device comprises a target adapter, a capturing locking assembly, an electrical connecting assembly and a vision measuring assembly. The target adapter is provided with a locking target, an electrical connector base and a camera target. The capturing locking assembly can capture a locking target on the target adapter through synchronous folding of two or more locking pawls in the axis direction of the capturing locking assembly. The electrical connecting assembly is installed inside the capturing locking assembly, and an electrical connector can move in the axis direction of the capturing locking assembly and is matched with the electrical connector base on the target adapter. The vision measuring assembly determines the relative position of the capturing locking assembly and the target adapter through monitoring on the camera target of the target adapter. According to the device, capturing, locking, power supplying and communication to the target can be achieved according to the information, accurately estimated by a vision camera in real time, of the three-dimensional position posture of the space cooperate target.