The lack of menstruation is usually not related to the injection of the new coronavirus vaccine, and may be due to mental anxiety, pregnancy, polycystic ovary syndrome, etc. It can be treated with pregnancy test, general treatment, and medication. After the injection of the new coronavirus vaccine, patients may experience localized skin redness, swelling, pain, fever, and in some cases muscle aches, dizziness, fatigue, nausea and vomiting. However, it does not usually cause amenorrhea, which may be due to mental anxiety, pregnancy, or illness. A pregnancy test can be performed first to determine if you are pregnant. If a period of mental tension, anxiety, can affect the body’s endocrine disorders, resulting in women do not menstruation, the patient needs to be appropriate relaxation relief, appropriate exercise, healthy diet and so on. In addition, abnormal ovarian function can also cause menstruation, patients should consult a doctor in time to identify the cause of the disease and targeted treatment.