There is no clear rule on how soon after surgery for ovarian teratomas the New Crown vaccine can be administered, usually once the patient has recovered from surgery. New Crown Vaccine is a vaccine used to prevent new coronavirus infections and is a biological agent with no direct relationship between it and ovarian tumors. After having surgery for ovarian teratoma, as long as the health condition recovers well, the pathology results suggest that there is no malignant lesion, and there is no infection or bleeding after the doctor’s assessment, the New Crown vaccine can be injected. However, it is necessary to rule out the possibility of pregnancy and avoid menstruation before injection. New Crown Vaccine is safe and beneficial as it establishes an effective immunoprotective barrier. Reactions such as pain, swelling and itching may occur at the vaccination site after receiving the New Crown Vaccine, and a small number of people need to go to the hospital in time when symptoms such as fever, headache and diarrhea occur and be treated symptomatically under the guidance of the doctor.