Whether vaginal bleeding the day after intercourse is normal or not depends on the patient’s specific situation. If the patient usually has no abnormal bleeding from intercourse and this bleeding occurs the day after intercourse, it happens to be a woman’s menstrual period, and the amount and duration of bleeding is the same as a woman’s usual menstrual period, and there is no abnormality is normal. If the patient happens to be in her menstrual period after intercourse, there is no possibility of pregnancy. If the patient happens to be in her ovulation period the day after intercourse, it is also a normal clinical manifestation for the patient to have ovulatory bleeding for 3-5 days without discomfort, and it does not need to be treated when it happens occasionally. Except for these two cases, other bleeding is abnormal, such as contact bleeding, inflammatory bleeding, bleeding due to endometrial polyps, etc. It needs to be clearly diagnosed by doing gynecological examination, cervical screening, ultrasound, hysteroscopy and other related examinations.