Abstract: Objective To observe effect of integrated Chinese and western medicine on gastrointestinal function rehabilitation in the treatment of patients after total mesorectal resection. Methods A total of 100 patients who underwent total mesorectal excision were selected as research objects, and were divided into control group and observation group by random number table method, with 50 cases in each group. The control group was given hot massage intervention after operation, and the observation group was added with ultrasound therapy equipment on the basis of the control group. The postoperative recovery of gastrointestinal function and the degree of pain were compared between the two groups. Results The time to first exhaust, time to first get out of bed, and time to first defecate in the observation group were significantly shorter than those in the control group(P<0.05). The observation group had significantly lower Visual Analogue Scale(VAS)scores at 12, 24, and 48 h after surgery and at discharge than the control group(P<0.05). Conclusion The combined treatment of ultrasonic therapy instrument combined with thermal massage after total mesorectal excision can accelerate the recovery of gastrointestinal function, relieve the degree of pain, and improve the prognosis of patients.