The utility model discloses a current transformer characteristic analysis appearance shell, the shell is the cuboid, and the top is provided with the handle, it is provided with the ventilation hole to control two sides for the equipment heat dissipation, openly be operation control panel, positive middle part leans on last position to be provided with the LCD display, and positive middle part leans on down the position to be provided with the keyboard, and positive position from the top down near the side is provided with first, second, the three or three montage mouth, and first interface is used for output interflow measuring power supply, second and third interface are used for the former limit and vice limit winding of junction current mutual -inductor respectively, the utility model discloses an analysis appearance convenient to carry, compact structure, the connecting circuit is simple, the test operating of being convenient for.