Two　monolayer　concrete　frames　with　the　same　reinforcement,　KJ1　and　KJ2,　were　designed.　KJ1　was　designed　to　simulate　low　cyclic　reversed　loading　test　under　weak　earthquake.　Besides,　the　fire　response　test,　including　temperature　rising　and　lowing,　was　made　by　fixing　the　axial　compression　ratio　of　the　column.　For　KJ2,　the　fire　response　test　at　the　fixed　axial　compression　ratio　was　made.　The　deformation　response　of　the　concrete　frames　in　fire　was　studied.　Comparative　analysis　of　the　apparent　phenomenon,　temperature　curves,　bearing　capacity　change　of　the　frames　were　made　based　on　the　test　results　of　KJ1　and　KJ2.　According　to　the　simplified　temperature　distribution,　the　ultimate　bearing　capacity　of　the　column　under　the　high　temperature　was　preliminarily　determined.　It　is　illustrated　that　the　calculation　results　and　finally　test　phenomenon　are　consistent　according　to　the　simplified　section.