Abstract: The patio is an important element of traditional architecture in hot and humid regions to adapt to the climate, build the intention of human habitation, and organize the space. As a thermal buffer space connecting indoor and outdoor, the patio space of Lingnan traditional buildings has good climatic adaptability in terms of shading and ventilation, and its wind and thermal environmental characteristics are important for the restoration, conservation and optimization of traditional buildings. A typical Guangfu-style "three rooms and two corridors" traditional building in Chatang Village, Guangzhou City, is studied by using a combination of grid and local distribution methods, and a total of 32 measurement points are used to test the wind and thermal environment parameters in the interior of the patio, connecting corridors, compartments and halls under a typical summer weather background. The results show that the thermal pressure ventilation effect of patio space is the largest at 11:00 and 14:00. The fluctuation range of parameters in the vertical patio space decreases from high to low, and the wind and heat parameters in the height of 2.5 m and above are greatly affected by outdoor parameters. There is diagonal polarization in the vertical distribution of wind speed. The door opening and closing of open roadway has a great influence on the spatial wind field of the patio within 2.5 m, but has no obvious influence on the temperature field. Except for the hall, the wind-heat parameters of patio space are positively correlated with corridor space and wing space. The results provide basis for the study and preservation of traditional architecture in Guangfu.