Ovarian mucinous cystadenoma 3 centimeters can be coitus, but if the patient after coitus abdominal pain and other discomforts, should consult the doctor in time. Mucinous cystadenoma is one of the most common types of ovarian epithelial tumors, most of which are benign and usually have little effect on normal sex life. However, if symptoms such as abdominal pain and bleeding occur after intercourse, it may cause cyst tip torsion or rupture, and timely consultation is needed. In addition, for the appearance of non-physiological cysts on the ovaries, need to be actively treated, commonly used surgical methods for laparoscopic surgery. Depending on the size of the mass, the doctor may consider removing one side of the adnexa or removing the mucinous cystadenoma. After the surgical treatment, regular checkups are needed so that the doctor can understand the patient’s recovery and avoid recurrence. Patients with mucinous cystadenoma of 3 centimeters should consult a doctor in time to assess the risk of coitus according to their condition and to carry out appropriate treatment if necessary. At the same time, patients should carry out appropriate daily physical exercise to enhance physical fitness, and also need to maintain an optimistic and positive mindset.