Synoptic characteristics and meteorological elements related to torrid weather of 37℃ or more in Guangzhou since 1951 are analyzed. It is found that the torrid weather usually occur in such situation with a ridge to the northwest of Guangzhou and a trough to the southeast of it and closely related to subtropical high and tropical cyclones. As the result of the influence of those two systems, subsidence is found around Guangzhou in most cases. It is also shown that northerly winds at surface and lower level are of aid to torrid weather. Furthermore, the temperature and precipitation in the preceding one or two days are involved in torrid weather.