Abstract: The properties and quality control of Ti6Al4V/Ti6Al4V ELI powder used in medical additive manufacturing were evaluated, in order to provide data reference for the medical additive manufacturing industry in China. The chemical composition, particle size distribution, vibrational density, loose density, fluidity and other properties of Ti6Al4V/Ti6Al4V ELI powders were tested and compared by the tested or current standard test methods. The results show that the particle size distribution of domestic Ti6Al4V/Ti6Al4V ELI powders used in this study is narrow and can meet the requirement of uniform energy absorption. The chemical composition meets the corresponding requirements in GB/T 3620.1—2016 and GB/T13810—2017. The powder bulk density used in SLM process is not less than 2.2 g/cm~3, the vibrational density is not less than2.5 g/cm3, and the fluidity is not more than 50 s/50 g. The bulk density of powder used in EBM process is not less than 2.3g/cm~3, the vibrational density is not less than 2.5 g/cm~3, and the fluidity is not more than 30 s/50 g.