According to the present invention, there is provided an apparatus for measuring the abrasion rate of a disc cutter for measuring a wear rate of a disc cutter 2 mounted on a cutter head 1 of a TBM, wherein the disc cutter 2 is coupled to the cutter head 1 An engaging portion 100 fixed to the disc cutter cover 3; And a measuring unit (200) fixed to the coupling unit (100) and measuring a wear rate of the disk cutter (2).According to the present invention, it is possible to measure the wear rate of a disk cutter having a high reliability.
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