The　paper　conducted　19　partially　and　5　fully　loaded　tests　on　round　-ended　concrete　-filled　steel　tubular　(CFST)　columns.　These　tests　revealed　that　the　ultimate　strengths　of　round　-ended　CFST　columns　under　partial　load　declined　as　the　cross-sectional　aspect　ratio　or　partial　compression　area　ratio　increased.　However,　the　use　of　a　top　plate　effectively　enhanced　their　ultimate　strengths.　In　addition,　a　finite　element　model　(FEM)　was　utilized　to　generate　487　large　-size　models　to　explore　the　confinement　effect,　stress　distribution,　and　parametric　effects.　Since　there　are　no　specific　design　standards　available　for　round　-ended　CFST　columns,　the　paper　has　evaluated　the　applicability　of　design　methods　provided　in　Eurocode　4,　AISC　360　-16,　and　Chinese　code　GB50396　which　are　intended　for　circular,　square,　or　elliptical　CFST　columns　for　round　-ended　CFST　columns　under　partial　load.　However,　these　existing　design　techniques　showed　inaccurate　and　dispersed　resistance　predictions　for　roundended　CFST　columns.　Therefore,　an　effective　simplified　method　for　forecasting　the　resistance　predictions　of　round　-ended　CFST　columns　under　the　partial　load　has　been　proposed　based　on　the　testing　results　and　FEM　analysis.