The　size　effects　of　reinforced　concrete　members　with　eccentrical　compression　are　experimentally　studied,　using　two　sizes　of　specimens　which　side　lengths　of　cross-section　are　200mm　and　400mm,　respectively,　under　the　conditions　in　which　e(0)/h(0)=0.6.　It　shows　that,　with　the　increase　of　the　size　of　the　specimen,　the　ultimate　load　capacity　of　the　specimen　decreases,　relative　to　the　calculated　values;　cross-sectional　strain　distribution　of　smaller　specimens　matches　plane-section　assumption　better　than　larger-sized　specimen＇s.