In order to study the factors influencing low temperature radiant floor heating in hot summer and cold winter locales, the impacts of five variables—water supply temperature, inter-tube flow rate, tube diameter, tube spacing, and filler layer thickness—on the average temperature and uniformity of the floor surface were examined using the orthogonal test technique of L₂₅ (5⁶). The research demonstrates: water supply temperature > tube spacing > tube diameter > filler layer thickness > inter-tube flow rate has the most influence on the floor surface's average temperature, while tube spacing > water supply temperature > filler layer thickness > tube diameter > inter-tube flow rate has the most influence on the floor surface's uniformity. The ideal level combination is water supply temperature is taken as 35 ℃, inter-tube flow rate is taken as 0.4 m/s, tube diameter is taken as 16 mm, tube spacing is taken as the test's findings serve as a guide for designing radiant heating systems for use in hot summer and cold winter climates. They also offer suggestions on how to combine statistics and numerical analytic tools.