In　this　paper,　the　basic　situation　of　bi-axial　quasi-static　testing　of　fourteen　reinforced　concrete　thin-walled　piers　with　hollow　cross-section　was　firstly　introduced.　And　then,　the　basic　procedure　to　establish　finite　element　model　of　the　piers　based　fiber　beam-column　element　was　carried　out.　Finally,　the　analytic　results　including　bidirectional　hysteresis　curves　and　skeleton　curves　were　compared　with　the　test　ones.　The　main　conclusions　are　listed　as　follows:　(1)　Analytical　hysteresis　curves　and　skeleton　curves　agree　well　with　the　test　ones　generally;　(2)　Calculating　ultimate　load　is　generally　smaller　than　the　test　ones　while　the　calculating　ultimate　deformation　is　a　few　bigger;　(3)　Nonlinear　finite　element　model　established　by　nonlinear　fiber　beam-column　element　has　a　good　prediction　of　nonlinear　mechanical　properties　in　action　of　bidirectional　cyclic　static　loading　and　can　be　used　further　for　parameter　analysis.