Hidden pain in the left lower abdomen after abortion may be caused by inflammation, ovarian mass torsion, etc. Antibiotic drug treatment, observation and treatment, surgical treatment, etc. can be used according to the cause. 1. Antibiotic drug treatment: If female patients have left lower abdominal pain caused by gynecological inflammatory diseases such as left salpingitis and left ovarian inflammation after abortion, they can be treated with antibiotic drugs such as ceftriaxone sodium injection, levofloxacin injection and tinidazole injection. 2. Observation and treatment: If the left lower abdominal pain caused by the left adnexal cyst occurs after abortion, the cyst is relatively small and there are no other obvious discomfort symptoms, observation and treatment can be carried out, and regular rechecks can be made. 3. Surgical treatment: If the left adnexal cyst torsion occurs after abortion, surgical treatment may be needed. Hidden pain in the left lower abdomen after abortion needs to be treated according to the cause.