To　analyse　size　effect　of　high-strength　concrete　column　under　small　eccentric　loading,　experimental　analysis　was　carried　out　on　3　categories　of　different　sizes　of　high-strength　concrete　columns　under　small　eccentric　loading.　The　columns＇　section　size　was　200　mm　×　200　mm,　400　mm　×　400　mm　and　800　mm　×　800　mm,　respectively.　Failure　mode,　ultimate　strength,　deformation　capacity　and　cross-sectional　strain　distributing　rules　were　compared　to　get　the　size　effect　law.　The　results　show　that　the　compressive　failure　mode　and　cross-sectional　strain　distributing　rules　of　HSC　column　under　small　eccentric　loading　are　basically　the　same,　and　the　size　effect　isn＇t　obvious.　Ultimate　strength　and　deformation　capacity　of　HSC　column　under　small　eccentric　loading　have　size　effect　obviously.　With　increase　of　section　size,　safety　reservation　of　ultimate　strength　is　reduced　and　deformation　capacity　also　reduces.