Abstract: Due to the sustainable development, the passive solar energy heating technology has drawn much attention and been widely applied in buildings. For the high-level solar radiation and little rainfall in Xinjiang, China, the passive solar houses have an excellent effect of the heating collection in winter. However, the application of passive solar houses is limited owing to its prevailing overheating and low thermal comfort in summer. Hence, energy efficiency should be hanced by adopting energy-efficiency measures like natural ventilation and passive radiant floor cooling that decrease building energy consumption. Combined with strong solar radiation and large temperature gap difference between day and night, the effectiveness of various cooling measures of passive solar houses with different structures was studied in this paper. This work aimed to study the measures for the passive solar house to alleviate summer overheating, such as the daytime thermal driven ventilation, the night natural ventilation, and the passive radiant floor cooling etc. Moreover, the influence of cooling measures on indoor thermal comfort was analyzed. Two passive solar houses with different structures in Shihezi, Xinjiang were built as case studies and the cooling effects of the four modes were contrastively proposed. Among four modes, mode1 and mode2 were introduced for the experiment based on a traditional passive solar house without a basement. Mode1 was the room using thermal driven ventilation only. Mode 3 was the room using the daytime thermal driven ventilation and the night natural ventilation. Different from the traditional passive solar house, mode 3 and mode 4 were designed based on a passive solar house with a basement. Mode 3 was an operation mode similar to mode1, and mode 2 was similar to mode 4. The solar radiation heat gain from the south wall of mode1 was far greater than that from the heat gain of thermal driven ventilation, which could not fulfill the cooling requirements. Although solar radiation heat gain from the south wall of mode 3 was close to that from the heat gain of thermal driven ventilation, solar radiation heat gain from other enclosed elements could not be ignored. The heat absorbed by the enclosed elements was larger than that eliminated by the driven ventilation, which was the fundamental reason for the indoor overheating in summer. After the initial adoption, the indoor average temperature of mode 2 was 1.95 ℃ lower than that of mode1, and mode 4 was reduced by 2.04 ℃ than mode 3 under the same meteorological conditions. The heat flux from the basement to the floor was maintained between 7.2 and 8.7 W/m2, and the cooling load from the basement to the test room was about 10 560.97 kJ. The experiment results showed that it was found that for the passive solar house without a basement in rural areas of Xinjiang, the driven ventilation combined with the night ventilation cooling mode proposed in this paper could increase the proportion of time to meet thermally comfortable conditions at 80% acceptability by 35.04%. And the passive solar house with basement met thermally comfortable conditions at 80% acceptability for 85.80% of the time, which had almost achieved in the goal of summer cooling. These results may lead to the development of designing and distributing passive cooling technology during the summer.