In　the　digital　era,　images　serve　as　an　important　means　of　information　transmission　and　communication.　The　authenticity　and　integrity　of　images　are　crucial　for　the　credibility　of　information.　Image　authentication　technology　can　verify　the　source　and　integrity　of　images,　ensuring　that　the　image　content　has　not　been　tampered　with　or　forged,　thus　enhancing　the　credibility　of　information.　There　are　two　types　of　authentication　methods　based　on　application　scenarios,　namely　active　and　passive　authentication.　Passive　authentication　technology　is　based　on　the　characteristics　of　specific　images,　so　it　cannot　be　extended　to　any　image.　In　this　paper,　we　propose　a　novel　active　image　authentication　technique　based　on　pixel-wise　check　code.　On　the　premise　of　maintaining　image　fidelity,　which　is　the　basic　requirement　of　data　hiding　technology,　the　pixel　check　code　is　hidden　in　the　pixel　itself.　The　method　enables　the　image　receiver　to　accurately　detect　and　locate　any　size　tampering　on　the　image.　Through　a　large　number　of　experiments,　we　verified　the　feasibility　of　the　technical　solution　and　the　expected　performance.　©　2023　IEEE.