The present invention relates to the field of pharmaceutical chemistry, and particularly to a crystal form of Abiraterone propionate and a preparation method therefor. Characteristic diffraction peaks occur at positions, where the 2θ value is 5.7°, 11.9°, 12.4°, 14.9°, 15.8°, 16.7°, 18.5°, 19.1°, 21.7°, 22.4°, and 39.9°±0.2°, in an X-ray powder diffraction spectrum of the crystal form of Abiraterone propionate.