The usual site of occurrence of paramedian tubal cysts is often the tubal mesentery, and these cysts are benign in nature and often recur. If a pelvic mass, cystic fluid is found preoperatively. During surgery, a tubal mesosalpinx cyst is explored and the cyst is removed. Routine postoperative pathology is suggestive of a paramedian tubal cyst. It is easy to recur after surgery, but to be clear, if the pelvic mass is found again after surgery, it is highly considered as tubal mesenteric cyst, the cyst is not big, it can be observed temporarily, and there is no need for surgical treatment for the time being, and repeated surgeries don’t have much significance.