A strip type off-circuit tap changer, comprising: A long-strip insulating rod with a section being a rectangle; and, a support connected to the insulating rod, wherein an operation positioning device is arranged on the support, a drive gear is disposed at a lower end of the operation positioning device, a rack mobile frame is disposed at an upper side of the insulating rod, and the rack of the rack mobile frame is engaged to the drive gear so that the rack mobile frame can longitudinally move along the insulating rod, columnar fixed contacts are longitudinally arranged at a spacing on the insulating rod, the rack mobile frame is connected to a moving contact frame, a moving contact assembly is arranged on the moving contact frame and fits with the fixed contact on the insulating rod, the moving contact assembly is formed by an annular moving contact and an elastic pin, the elastic pin is radially arranged along the annular moving contact, and the annular moving contact spans between two adjacent columnar fixed contacts, and the elastic pin is formed by a sliding pin and a return spring, a rear section of the sliding pin fits with a sliding hole of the moving contact frame, and an end head with a large diameter is disposed at a front end of the sliding pin and fits with an inner ring of the annular moving contact, the return spring is sleeved out of the sliding pin, located between a sliding hole end face and the sliding pin end head, the moving contact frame is arranged with a cantilever bent downwards, and a sliding slot is opened at an inner side of the cantilever and fits with a lower end of the insulating rod in a sliding manner. A long-strip insulating rod with a section being a rectangle; and, a support connected to the insulating rod, wherein an operation positioning device is arranged on the support, a drive gear is disposed at a lower end of the operation positioning device, a rack mobile frame is disposed at an upper side of the insulating rod, and the rack of the rack mobile frame is engaged to the drive gear so that the rack mobile frame can longitudinally move along the insulating rod, columnar fixed contacts are longitudinally arranged at a spacing on the insulating rod, the rack mobile frame is connected to a moving contact frame, a moving contact assembly is arranged on the moving contact frame and fits with the fixed contact on the insulating rod, the moving contact assembly is formed by an annular moving contact and an elastic pin, the elastic pin is radially arranged along the annular moving contact, and the annular moving contact spans between two adjacent columnar fixed contacts, and the elastic pin is formed by a sliding pin and a return spring, a rear section of the sliding pin fits with a sliding hole of the moving contact frame, and an end head with a large diameter is disposed at a front end of the sliding pin and fits with an inner ring of the annular moving contact, the return spring is sleeved out of the sliding pin, located between a sliding hole end face and the sliding pin end head, the moving contact frame is arranged with a cantilever bent downwards, and a sliding slot is opened at an inner side of the cantilever and fits with a lower end of the insulating rod in a sliding manner.