The invention relates to a non-rigid material hexahedron precise automatic processing technology and system for an insulation box foam board used for an LNG ship. The technology includes a foam boardrough processing stage, a foam board fine processing stage, a cleaning stage, and a detection stage, wherein the foam board rough processing stage, the foam board fine processing stage, the cleaning stage, and the detection stage are performed in sequence, and the foam board fine processing stage includes a thickness fine processing process, a side edge processing process, an end surface processing process, and a forming processing process, wherein the thickness fine processing process, the side edge processing process, the end surface processing process, and the forming processing process aresequentially performed. Compared with the prior art, the non-rigid material hexahedron precise automatic processing technology and system have innovative automatic processes, all carrying and overturning processes are completed by robots, all devices have communication functions, the unmanned requirement is met, manual participation is greatly reduced, safety of the production process is improved, and at the same time, the production efficiency and the stability of the size of a finished product are improved.