A retrospective analysis of 98 patients with liposuction and shaping admitted to Guangxi Nanning Weimei Medical Beauty Outpatient from June 2019 to August 2021. All patients were anesthetized by general intravenous anesthesia combined with lowconcentration modified lidocaine tumescent solution. The amount of swelling fluid injection, the total amount of suction, the amount of fat suction, the occurrence of complications, and the satisfaction of patients were investigated. The results showed that the injection volume of swelling fluid was 6200-10 820 ml, and the average injection volume was (8341.00±997.60)ml. The total fat mass was 3210-4758 ml, with an average of (3945.00±578.00)ml. There were 3 cases of local unevenness in the small range of suction area, 3 cases of subcutaneous seroma formation in the suction area, 1 case of small skin necrosis, and pigmentation after secondary healing. Patient satisfaction was 93.75%. It shows that the modified low-concentration and high-dose lidocaine swelling solution provides a safety guarantee for large-volume and extensive liposuction, improves the effect of liposuction on body remodeling, and has high patient satisfaction.