Provided are ejaculum of animals as medicinal materials and uses thereof in manufacture of medicaments for treatment of various tumors, depression, senile dementia, and dermatosis. Said tumors include ovarian cancer, uterine cancer, breast cancer, esophageal cancer, stomach cancer, colon cancer, lung cancer, osteocarcinama, etc. The present medicinal material, alone or in combination with additional agents, is similar to cyclophosphamide in antineoplastic effects, which is accepted presently the most potent chemotherapeutic agent. It can inhibit the growth of tumors, not destroying the normal immune system of human. The present medicinal material of ejaculum is powdery crystal prepared by vacuum lyophilization from fresh ejaculum of animals, and it is suitable to a variety of dosage forms such as capsule or oral solution.