We　consider　a　profit　allocation　of　employee　coalitions　in　tacit　knowledge　sharing.　Owing　to　the　existence　of　uncertain　factors,　the　allocation　of　profits　cannot　be　accurately　expressed　among　players.　Triangular　fuzzy　numbers,　which　are　expressed　as　the　payoffs　of　coalitions,　are　used　to　give　an　allocation　solution.　Meanwhile,　the　allocation　also　addressed　the　influence　of　coalitions’　importance.　A　quadratic　programming　model　is　built　to　obtain　a　suitable　solution,　which　is　a　triangular　fuzzy　number　distribution　value　of　each　player.　Further,　we　add　a　constraint　to　the　built　model:　effectiveness,　and　obtain　the　pre-allocated　solution.　Finally,　the　rationality　and　superiority　of　the　proposed　model　are　verified　through　a　numerical　example.　©　Springer　Nature　Singapore　Pte　Ltd.　2017.