The invention discloses a biological peptide capsule capable of enhancing memory. The biological peptide capsule is prepared from the following raw materials in parts by weight: 15-20 parts of algal oil, 5-10 parts of gelatin, 10-15 parts of glycerinum, 5-10 parts of fish oil and 30-40 parts of memory-enhancing peptide. The invention has the advantages that the selected materials are safe, algal oil and fish oil are both extracted by adopting a biological extraction method, the memory-enhancing peptide has an obvious effect of enhancing memory, the effect is better due to the combination of algal oil, fish oil and memory-enhancing peptide, and the biological peptide capsule is suitable for a wide range of people and is applicable to both old people and children.