The pain in the pubic area after coitus is often caused by the following reasons.1. During sex, the man’s action is rough, causing damage to the mucous membrane tissue of the pubic area, and small cracks appear, and the secretion flows to the cracks and the symptoms of pain will appear. It is recommended to keep the vulva clean, you can use 30% of the jersey to clean the local area, if there is a small fissure, you can apply erythromycin ointment for treatment. If erythromycin allergy, you can apply Su skin ointment for treatment, which is conducive to the healing of the wound as soon as possible. 2, due to the original acute inflammation or chronic inflammation of the pubic area. In this case, it is recommended to actively treat the inflammation of the vagina, which will improve the situation of pain in the vagina caused by coitus.