The presence of blood the day after sexual intercourse is not normal and is mainly due to cervical problems. Nowadays, the probability of cervical diseases has increased significantly, and it is necessary to go to the hospital for further examination. The most common causes need to be considered as acute inflammation of the cervix, cervical polyps, and precancerous lesions of the cervix. The most common causes are acute inflammation of the cervix, cervical polyps, and precancerous lesions of the cervix, such as cervical leukoplakia and atypical hyperplasia of the cervix, which are precancerous lesions of the cervix, and the first symptom of these diseases is bleeding after sexual intercourse. The cervix must have malignant lesions, the cervix from ordinary lesions to malignant lesions have a process, as long as in this process timely treatment, the vast majority of patients can be cured.