The　thermal　properties　and　the　stress-strain　relations　of　steel　and　concrete　of　steel　reinforced　concrete　(SRC)　columns　under　high　temperature　are　confirmed.　Finite　element　method　is　applied　to　calculate　the　temperature　fields　of　the　sections.　A　comparison　between　calculated　results　and　tested　results　of　temperatures　shows　good　agreement.　Based　on　the　reasonable　definition　of　the　sectional　temperatures,　a　numerical　method　is　developed　to　calculate　the　fire　resistance　and　the　load-deformation　curves　of　steel　reinforced　concrete　columns.　The　calculated　results　agree　well　with　those　of　tests.