The office work and field work of traditional UAV aerial photogrammetry in plateau mountains area are complex and inefficient. The Sirius UAV has advanced non-GCPs aerial photogrammetry technology that can quickly acquire high-resolution multivariate data and greatly reduce data processing and field work hours. This paper selects Lishan Village in Yunnan for the aerial photogrammetry area. Digital orthophoto (DOM) and digital surface model (DSM) are obtained by processing aerial photogrammetry data. Measuring the plane coordinates of the detection point from the orthophoto image and measuring the height of the detection point on the digital surface model. The error is obtained by calculation, and then compared with the specification standard to complete the inspection of plane precision and height accuracy. The results show that the mean square error of plane is 0.129m; the maximum error of the elevation accuracy is 0.221m, the minimum error is 0.068m; the mean square error of height is 0.086m. The accuracy of the data meets the requirements of the specification, which proves the feasibility of Sirius UAV non-GCPs aerial photogrammetry technology applied in the plateau mountains area. Through the accuracy analysis of the aerial photogrammetry data of Sirius UAV in Lishan Village, Yunnan, it provides reference and data support for aerial photogrammetry non-GCPs in similar terrain.