Anti-off-line distribution automation tester

The invention discloses an anti-off-line distribution automation tester, and particularly relates to the technical field of distribution testers, the tester comprises a tester shell, one side of the tester shell is provided with a multi-hole-site connection panel used for inserting a plurality of test plugs, one side of the multi-hole-site connection panel is fixedly provided with a guide frame, and the guide frame is provided with a plurality of test plugs. And a linkage mechanism is mounted in the guide frame. A linkage mechanism is adopted to enable a threaded rotating rod to drive a threaded lantern ring block to move under the action of a thread, all sliding supporting blocks move along the outer portion of a guide sliding block, a first arc-shaped extrusion plate can extrude the side face position of a plug, the plug is firmly fixed to the inner wall position of a second arc-shaped extrusion plate, and the plug is prevented from being damaged. When the plug is prevented from falling off, transverse lock