Abstract: In order to study the outdoor thermal comfort of campus in hot and humid area in winter, six common campus public spaces in Dongfeng Road campus of Guangdong University of Technology are selected as the research objects and divided into three space types: building surrounding, building side opening and garden. By measuring the environmental physical parameters and conducting the subjective questionnaire, the PET (Physiological Equivalent Temperature) is calculated by Rayman model and the neutral temperature of PET is 20.4 ℃ by regression analysis. The overall thermal comfort and thermal acceptability of the outdoor thermal environment of Guangzhou Campus in winter are high, in which the thermal feeling of the people in the surrounding space of the building and the thermal comfort voting show a linear relationship, while the other types of space show a quadratic polynomial relationship, which provides an optimization reference for the campus thermal environment in the hot and humid area in winter.