The invention disclose a system and method for measuring a static pulling force of a claw-shaped hardware fitting at an end part of a high-voltage casing pipe of a transformer. A frame body comprises an upper cross beam, a lower cross beam, a left cross beam, and a right cross beam. The upper and lower cross beams of the frame body are respectively provided with three holes in a horizontal direction. The central part of the frame body is provided with a central cross beam, and the central cross beam is provided with three holes in the horizontal direction. The holes on the upper, central and lower cross beams are corresponding in a vertical direction. The central cross beam comprises a fixed part and two connection parts, wherein two ends of the fixed part are disposed on the frame body through the two connection parts. The top of the fixed part is higher than the upper and lower cross beams in the horizontal direction, and the bottom of the fixed part is lower than the upper and lower cross beams in the horizontal direction. The upper, lower, left and right cross beams and the connection parts are respectively provided with a pulling force sensor. The system solves a problem that the stress of a claw-shaped hardware fitting at an end part of a casing pipe of a transformer of a conventional transformer substation is difficult to detect, and can achieve the convenient, real-time and precise detection of the pulling force of the claw-shaped hardware fitting.