Incoherent-twin　boundaries　(ITBs)　can　significantly　affect　the　mechanical　properties　exhibited　bymetals.　Although　numerous　studies　have　been　conducted　to　date,　the　atomic　structures　of　such　ITBs　remain　unclear,　owing　to　difficulties　in　imaging　their　structure.　In　this　study,　high-angle　annular　dark-field　imaging　was　used　to　reveal　the　atomic　structure　of　the　ITBs　present　in　Pt.　We　discovered　that　both　the　twin　thickness　and　the　dislocation-ITB　interaction　can　affect　the　ITB　phase　structure.　In　thin　twins,　the　{111}　planes　between　the　ITB　remain　flat　without　any　obvious　displacement　along　the　＜　111　＞　direction,　whereas　in　thicker　twins,　the　{111}　planes　between　the　ITB　exhibit　clear　displacement　along　the　＜　111　＞　direction,　with　this　displacement　increasing　as　the　twin　thickness　increases.　The　ITBs　frequently　absorb　full　dislocations,　which　leads　to　the　formation　of　dislocation-misaligned　ITBs.　This　twin-　thickness　effect　and　dislocation-ITB　interaction,　which　resulted　ITB-phase　variation,　has　rarely　been　reported.