Objective To investigate the rehabilitation effect of swelling fluid cold therapy at different temperatures on patients with lower extremity varicose veins（LEVV） under epidural anesthesia and local swelling anesthesia. Methods 101 patients undergoing epidural anesthesia and local swelling LEVV in a tertiary A hospital in Fuzhou for vascular surgery from December 2019 to March 2021 were selected as study subjects by convenient sampling method. They were randomly divided into 3 groups according to random numbers,namely test group A with 34 cases provided with 4~9 ℃ of swelling fluid,test group B with 34 cases provided with 10~15 ℃ of swelling fluid,the control group with 33 cases provided with 18~24 ℃ of swelling fluid. The rehabilitation of surgical limb pain value,ecchymosis area,the number of hematoma occurrence and complications in the 3 days of the 3 groups were observed. Results The differences of baseline data between the 3 groups were not statistically significant（P>0.05）;the pain scores of the 2 test groups were lower than those of the control group（P<0.05）. The skin ecchymosis area on the 3rd day after the surgery in the 2 test groups was lower than it in the control group with statistically significant differences（P=0.001）. There was no significant difference in the hematoma of the 3 groups on postoperative 3rd day（P=0.278） and no adverse reactions occurred in the 3 groups. Conclusion Intraoperative cold treatment with 4~9 ℃ or 10~15 ℃ swelling fluid in patients with LEVV can reduce the pain and ecchymosis area of postoperative 3 d.