Objective:To study the formation technology of Rujining capsule. Methods: The influence of different excipients on the hygroscopicity of extract powder was investigated by screening the best processing technology conditions and inspecting the critical relative humidity

angle of repose

and bulk density. Result: Microcrystalline cellulose as excipients had a good anti-wet performance

the extract powder and microcrystalline cellulose were mixed evenly in proportion of 7∶3

the 95% alcohol was used as the weting agent

its amount was 25% of extract powder. The granules of end product had a good fluidity

the critical relative humidity was about 50%

bulk density was 0.466 g ·mL-1. Conclusion: The molding technology is reasonable

and can provide reliable basis for production.