Vaginal bleeding when patients have sex may be caused by cervical polyps, cervicitis, cervical cancer, etc. Patients can improve their condition through general treatment, medication, physical therapy and surgery. 1. Cervical polyps: patients with cervical polyps may experience contact bleeding during intercourse. Remove the cervical polyps and send the removed tissues for pathological examination. For larger polyps, the root of the polyp can be treated by laser, electrocautery, microwave, freezing and other methods after surgical excision so that it will not be removed cleanly. 2. Cervicitis: patients with cervicitis can be treated with antibiotics such as ceftriaxone sodium, cefazoxime, clarithromycin, erythromycin, etc. under the guidance of doctors; for cervicitis caused by herpes virus infection, antiviral drugs such as acyclovir can be used for treatment to improve the condition. 3. Cervical cancer: For cervical cancer patients, targeted drugs such as bevacizumab can be used under doctor’s guidance, and surgical resection, radiotherapy and chemotherapy can also be used to improve the condition. It is suggested that patients should strictly follow the doctor’s prescription, actively cooperate with the doctor’s treatment, pay attention to monitoring the condition in life, and undergo regular checkups.