“those who have permanent property have perseverance”. The security of rural housing is the most concerned issue for the poor people，and it is the basic requirement and core index to measure the poverty alleviation of the poor. It is also one of the most intuitive and specific landmark tasks in the overall goal of “two worries and three guarantees”. It is directly related to the quality of winning the battle against poverty and building a moderately prosperous society in an all-round way，and it is also the “key key” to enhance the confidence of the poor people in rural areas to shake off poverty and become rich. Guizhou is the first pilot province in the country to carry out the renovation of dilapidated houses in rural areas，and it is also the main battlefield for the country to fight against poverty，and it is also the province with the largest number of dilapidated houses in rural areas and the largest number of people out of poverty. Since Guizhou carried out the transformation of dilapidated houses in rural areas in 2008，it has persisted in promoting the combination of the transformation of dilapidated houses in rural areas with the renovation of living environment，the revitalization of villages，big data，poverty alleviation and relocation in different places，and housing security，etc.，and achieved remarkable phased results. It provides Guizhou samples for the whole country to win the battle against poverty and to realize the “housing security” of the poor people. It has laid a solid foundation for Guizhou to build a moderately prosperous society in an all-round way and to promote the revitalization of rural areas.