A medium voltage electric distribution cabinet owner wiring system, including a medium voltage electric distribution cabinet owner wiring system measurement cabinet, PT cabinet, inlet wire cabinet and feeder cabinet, the measurement cabinet includes that a current transformer, first fuse, measurement are with voltage transformer, first electrified display and first arrester, the measurement links to each other with the middling pressure generating line through a first fuse and a current transformer with voltage transformer's inlet wire end in proper order, a current transformer's leading -out terminal is respectively through first electrified display and first arrester ground connection, the PT cabinet includes three winding formula voltage transformer and second fuse, three winding formula voltage transformer's inlet wire end links to each other with the middling pressure generating line through the second fuse, the inlet wire end of second fuse is through second arrester ground connection. The utility model discloses simple structure, convenient to use have reduced the fault rate of system, have improved the electric energy quality, and the reliability of guarantee electric power has reduced charges of electricity expenditure, has improved the distribution network reliability.