A new building reform constituted with envelope structure reform and passive design have been developed. The program aimed to improve the utilization efficiency of solar energy in rural houses. An existing rural house in Shihezi suburb was taken as an example to analyze the reasonable scheme of exterior envelope reform of the rural house and to study the best scheme of passive design of south wall of the rural house. As a result, Indoor thermal environment before and after the reform show that the indoor temperature after the renovation can reach 10.9 ℃ compared with that before the renovation by adopting the proposed scheme of the outer envelope structure renovation and the passive renovation of the South wall. In the initial stage of heating, the coal consumption of the rural house, which was after the renovation, had been reduced to 34.86% of that before the renovation, and the contribution of passive heat supply was 11.85%. The passive renovation of rural house has obvious energy-saving effect, and the auxiliary heat needed to maintain indoor temperature is greatly reduced, which provides renovation scheme and operation experience for other rural residential passive renovation in Xinjiang.