ing at the problem of large calculation errors of weight coefficients caused by factors, such as medium refractive index changes and lens distortion in light field particle image velocimetry (PIV) technology, a method for calculating light field PIV weight coefficients based on volumetric calibration tracking technology is proposed. First, the mapping relationship between the spatial object points and the microlens is established by the volume calibration method. Second, the ray tracing technology is used to calculate the weight coefficient of the discrete voxel to pixel in the control body. Finally, the weight coefficient calculated by this method is compared with the direct tracking method, and the spatial positions of the feature points of the calibration plate are reconstructed experimentally. The experimental results show that the weight coefficient calculated by the volumetric calibration tracking method is highly consistent with the calculation results of the direct tracking method. The position errors of reconstructed calibration plate feature points in transverse and depth directions are less than 0.002 mm and 0.250 mm, respectively.