Due　to　the　spatial　resolution　limitation　of　the　magnetic　Barkhausen　Noise　(MBN)　sensor,　the　mechanism　by　which　MBN　signals　are　affected　by　the　elastoplastic　evolution　process　at　the　grain　scale　remains　unclear.　In　this　study,　a　high-resolution　MBN　sensor　was　used　to　investigate　the　distribution　of　MBN　signals　near　grain　boundary　in　grain-oriented　silicon　steel　under　controlled　residual　plastic　strain　and　applied　stress,　simulating　a　cold　work　hardening　process.　It　was　observed　that　MBN　signals　near　the　grain　boundary　varied　with　the　introduction　of　applied　stress　and　residual　plastic　strain.　A　multi-factor　mechanism　was　analyzed　and　proposed,　incorporating　the　effects　of　microstructure,　applied　stress/strain,　and　residual　stress　at　the　grain　scale.　These　findings　provide　valuable　insights　for　the　subsequent　improvement　of　the　micromagnetic　theory　at　the　grain　scale.