Patients with posterior mitral valve prolapse should undergo a cardiac ultrasound to determine the severity of the condition before choosing the appropriate treatment plan such as medication or surgery. Patients with posterior mitral valve prolapse may have asymptomatic or palpitations, weakness, dyspnea, etc. Patients can determine the severity of the condition by cardiac ultrasound and combining it with cardiac auscultation for systolic murmurs. If the patient is asymptomatic, most of them do not need treatment. It is sufficient to pay attention to the daily rhythm of life, avoid strenuous activities and follow up regularly. If the symptoms are mild, beta-blockers such as atenolol and sotalol can be taken under the supervision of a doctor. If the patient’s symptoms are more severe, he or she can be treated with surgery such as mitral valvuloplasty by a specialized doctor. When the patient has the phenomenon of posterior mitral valve leaflet prolapse, it is recommended to go to the hospital in time for diagnosis and reasonable treatment by professional doctors.