An object surface data detection method and system, an electronic apparatus, and a storage medium. The object surface data detection method, applied to a three-dimensional scanning system comprising detection auxiliary devices and a scanning device, includes: obtaining a unified coordinate system established for the detection auxiliary devices, wherein a number of the detection auxiliary devices is at least two; respectively obtaining first scan data of the scanning device scanning a surface of an object and tracking results of the detection auxiliary devices tracking the scanning device; and comprehensively calculating the tracking results, the first scan data, and the unified coordinate system to obtain an object surface detection result.