The invention relates to the technical field of pharmaceutical preparations, in particular to an
abiraterone acetate self-emulsifying soft
capsule and a preparation method thereof. The
abiraterone acetate self-emulsifying soft
capsule comprises a content and a
capsule shell, the content is prepared from the following components in percentage by
mass: 5 percent to 7.5 percent of
abiraterone acetate, 22.5 percent to 48.75 percent of a surfactant, 25 percent to 42.13 percent of a cosurfactant, 10 percent to 30 percent of an
oil phase and 0.005 percent to 0.02 percent of an
antioxidant; the average particle size of the
microemulsion formed by diluting the content with a
hydrochloric acid solution with the pH value of 1.2 is 80-100 nm. The
abiraterone acetate self-emulsifying soft capsule has good long-term storage stability and high
bioavailability,
drug absorption is not affected by
food intake, and medication compliance of patients can be improved.