Clip-on ammeter convenient to adjust

The invention relates to the technical field of electric power overhaul, and discloses a clip-on ammeter convenient to adjust, which comprises an ammeter body, an adjusting casing, a holding rod and an opening and closing iron core, the adjusting casing is fixed at one side of the casing, the holding rod is arranged at the bottom of the adjusting casing, the opening and closing iron core is arranged at the top of the adjusting casing, and the opening and closing iron core comprises a fixed iron core and a movable iron core. The movable iron core is hinged to the adjusting machine shell, a first pulling assembly driving the movable iron core to be opened and closed in an overturning mode is further arranged below the adjusting machine shell, an occlusion wire ring is arranged at the center of the opening and closing iron core, a rotating assembly is arranged at the tail end of the fixed iron core, the occlusion wire ring is connected with the rotating assembly, and a second pulling assembly driving the rotatin