Recently, a survey report entitled “the average housing vacancy rate in 28 large and medium-sized cities across the country is 12%” once again triggered the public’s discussion on vacant housing. According to the report, Nanchang, Langfang and Foshan have the top three housing vacancy rates, all above 15%, and Nanchang has a housing vacancy rate of 20%. However, on August 11, the agency said that some of the survey questionnaire data were collected incorrectly, resulting in inaccurate data. At the same time, the survey took “whether the house has been unoccupied for three consecutive months” as the judgment index, which could not fully reflect the real situation< Br > < div class = "height" > < / div > in fact, the discussion on vacant housing has not stopped for more than ten years. The number of housing vacancy rate affects the nerves of the public generally. “The level of housing vacancy rate” is also considered as an important indicator to measure the foam of the property market< br>