With the progress of science and technology,the wide application of unmanned aerial vehicle in the field of surveying and mapping has become a trend,especially oblique photogrammetry technology,which provides a new solution for house floor area measurement due to its advantages in spatial data acquisition,processing and analysis.Oblique photogrammetry is a technology that uses unmanned aerial vehicle-borne high-precision photographic equipment for further modeling and measurement through software from different shooting angles,aiming to improve the accuracy and efficiency of measurement.