The　wear　of　the　eutters　accounts　for　a　significant　portion　of　the　engineering　eosls　when　a　Tunnel　Boring　Machine　(TBM)　operating　in　hard　rocks.　Understanding　the　wear　patterns　of　die　eutter　is　a　key　faetor　in　optimizing　cutter　design　and　reducing　eutter　consumption.　Based　on　a　TBM　projeet　in　Xinjiang,　this　study　found　that　the　wear　of　the　cutter　edge　tip　is　quite　common　under　Class　II　and　HI　rock　conditions.　By　continuously　tracking　and　measuring　the　shapes　of　the　worn　cutter　edge,　the　changes　in　cutter　edge　shape　during　the　wear　process　was　analyzed　from　various　perspectives,　including　tip　position,　edge　height　difference,　tip　height,　and　edge　width.　The　results　indicate　a　consis-tent　trend　in　the　evolution　of　the　face　cutter＇s　edge　shape,　with　the　tip　leaning　inward　and　the　edge　heing　higher　on　the　inside　and　lower　on　the　outside.　In　contrast,　the　edge　cutter＇s　shape　evolution　exhibited　two　forms:　one　with　the　tip　leaning　inward　and　another　with　the　tip　leaning　outward.　By　analysis　of　the　stress　State　during　the　rock-breaking　process　of　the　cutter　it　evaluated　the　impact　of　installation　radius　and　tilt　angle　on　the　wear　shape　of　cutter　edges.　By　statistically　analyzing　the　wear　volume　and　diameter　loss　of　the　cutter,　it　was　found　that　as　the　installation　radius　in-creased,　the　wear　rate　of　the　center　cutter　rapidly　decreased,　the　wear　rate　of　the　face　cutter　tended　to　stabilize,　while　the　wear　rate　of　the　edge　cutter　sharply　increased.　©　2025　Editorial　By　Modern　Tunnelling　Technology.　All　rights　reserved.