Aircraft skin radian comparison tool

The utility model discloses an aircraft skin radian comparison tool. The aircraft skin radian comparison tool comprises a radian comparison tool unit composed of a radian copying module, two fixing plates, a plurality of fastening positioning pins and a plurality of fixing connecting pieces. The radian copying module is composed of a middle plate and two flanging parts, the middle plate is provided with a guide hole array formed by evenly distributing a plurality of guide holes, and the flanging parts are divided into a plurality of flanging pieces through a plurality of kerfs perpendicular to bending lines. The radian of the aircraft skin needing to be repaired can be copied to the middle plate of the radian copying module, and the radian of the middle plate is locked through the fixed connecting piece and the fixed plate, so that the radian comparison tool unit can be sent to a repair workshop to be used for performing radian comparison work in the process of rolling a new aircraft skin; the tedious and low