GB/T 41949-2022 "Particles - Laser Particle Size Analyzer - Technical Requirements" specifies the core technical indicators of laser particle size analyzers, including repeatability, accuracy, resolution, and lower measurement limit. Repeatability requires that the standard deviation of characteristic particle sizes for samples within different particle size ranges must meet corresponding limits, while accuracy sets clear regulations for the relative error in measurements of certified reference materials. Resolution must be capable of identifying multi-peak distributions within specific particle size ranges. Additionally, it is clarified that characteristic parameters within the cumulative particle size range of d5 to d95 should be prioritized for measurement. This standard provides a unified technical basis for the production, inspection, and use of such instruments.