The First Military Medical University of the Chinese People's Liberation Army

To evaluate the safety and effectiveness of Changtong oral liquid in preventing peritoneal adhesions in patients undergoing abdominal surgery.

1. To evaluate the clinical efficacy of Changtong oral liquid in the prevention and treatment of postoperative peritoneal adhesion in patients with simple appendicitis, acute suppurative appendicitis, chronic appendicitis, or abdominal hysterectomy or subtotal abdominal hysterectomy due to uterine fibroids. 2. To evaluate the safety and adverse reactions of Changtong oral liquid in the treatment of postoperative peritoneal adhesion in patients with abdominal surgery.