This　paper　compares　indoor　thermal　environment　and　thermal　comfort　between　radiant　and　convective　systems　in　continuous　operating　mode　using　large　field　test　samples　from　the　Chinese　Thermal　Comfort　Database.　Hypothesis　tests　are　performed　to　compare　thermal　environment　parameters　and　human　subjective　responses.　We　are　concerned　not　only　with　statistical　significance　(P-value),　but　also　with　the　effect　size　(d),　since　a　small　size　effect　would　not　have　any　practical　significance.　There　is　evidence　of　overheating　of　radiant　systems　due　to　high　air　temperature　during　heating　season.　There　is　no　practical　difference　in　air　temperature　between　the　two　systems　during　cooling　season.　Indexes　of　radiant　temperature　asymmetry,　vertical　air　temperature　difference,　air　velocity　and　floor　surface　temperature　are　analyzed　and　compared.　There　is　little　practical　difference　in　thermal　comfort　vote　between　the　two　systems　at　the　same　PMV　interval.　The　neutral　temperature　difference　is　within　1.1　?　during　heating　season　and　is　within　0.3　?　during　cooling　season　between　the　two　systems,　which　are　narrower　than　the　GB50376-2012　(2　?　during　heating　season　and　0.5-1.5　?　during　cooling　season).　This　paper　can　provide　reference　for　thermal　environment　design　and　thermal　comfort　evaluation　under　different　HVAC　systems.