Block chain network-based mapping processing method, collaborative mapping method and system

The invention relates to a collaborative mapping system based on a block chain network, and the system comprises a plurality of detection robots which serve as first-level nodes and have the functions of data secure transmission and data storage; and the plurality of servers are used as secondary nodes and have the functions of data secure transmission, data storage, task allocation and data processing. The detection robot is used for exploring a target environment to obtain local map information and corresponding key frames. The plurality of servers determine whether the newly uploaded local map information intersects with all the map information locally stored by the plurality of servers based on the logic of matching the key frames and the stored key frame information, so that the uploaded local map information is locally stored under the condition of matching failure; or fusing the uploaded local map information with the locally stored map information under the condition of successful matching. The proble