Objective To compare the effect between single port airless laparoscopic surgery and traditional laparoscopic surgery on hemodynamics, coagulation function, and complications in patients with gynecological benign diseases. Methods A total of 80 patients with gynecological benign diseases undergoing laparoscopic surgery for treatment were selected, and they were randomly assigned to control group or study group, with 40 cases in each group. The control group received traditional laparoscopic surgery for treatment, whereas the study group was treated with single port airless laparoscopic surgery. The operative indices (operation duration, intraoperative bleeding volume, postoperative anal exhaust time, and 6⁃hour and 24⁃hour postoperative pain degree), and coagulation function indices (prothrombin time [PT], activated partial thromboplastin time [APTT], thrombin time [TT], and D⁃dimer level), as well as hemodynamic indices (mean arterial pressure [MAP], heart rate, peak airway pressure, partial pressure of end⁃tidal carbon dioxide [PetCO2]) ; in addition, the occurrence of complications were compared between the two groups. Results Compared with the control group, the study group exhibited shorter operation duration, postoperative anal exhaust time, less intraoperative bleeding volume, and a lower pain score 6 and 24 hours after operation (P<0.05). The study group yielded shorter PT, APTT, and TT, and a lower level of D⁃dimer as compared with the control group 30 minutes during surgery and at the end of surgery (P<0.05). The study group interpreted lower MAP, heart rate, peak airway pressure, and PetCO2 as compared with the control group 60 minutes during surgery and at the end of surgery (P<0.05). The total incidence rate of complications of the study group was lower than that of the control group (P<0.05). Conclusion Compared with traditional laparoscopic surgery, single port airless laparoscopic surgery for the treatment of gynecological benign diseases exerts more advantages, which can reduce intraoperative bleeding volume, relieve patients' pain degree, exerting smaller effects on coagulation function and hemodynamics, and its incidence rate of complications is lower.