The invention discloses a soft peony peptide capsule and a preparation method thereof. The fillings of the soft capsule are prepared from the following raw materials by weight parts: 30-40 parts of peony peptide powder, 1-3 parts of a peony seed and hull extract, 1-3 parts of a peony flower extract, 3-8 parts of beewax and 48-63 parts of peony seed oil, wherein the peony peptide powder is obtained by enzymatically hydrolyzing peony seeds through protease and drying; the peony seed and hull extract is obtained by extracting from peony seeds and hulls and drying; the peony flower extract is obtained by extracting from peony flower petals subjected to steam distillation, and drying. The soft capsule disclosed by the invention is high in nutritional value and contains various active ingredients with relatively good health functions; peony peptides have small molecular weight and are uniformly distributed; the function of the peony seeds are reserved to the maximum extent; the soft capsule is natural, high in nutrition, easy to absorb and remarkable in bio-activity of resisting oxidation, bacteria, tumors and the like.