The invention provides a cefradine capsule and a preparation method thereof. The capsule comprises the following components in weight percentage: 70-90 wt% of cefradine, 5-15 wt% of partial pregelatinized starch, 5-15 wt% of microcrystalline cellulose and 0.1-1 wt% of magnesium stearate. The components in the capsule have good compatibility; the prepared cefradine capsule is good in dissolution and high in stability; the provided preparation method is simple in process and easy in quality control.