Objective: To explore the relationship between sleeve gastrectomy and food addiction in obese population. Sleeve gastrectomy is by far the most common type of weight loss surgery. However, there is little data on its effects on psychological outcomes and eating behavior. The relationship between changes in food addiction and body mass index (BMI), percentage of excess body mass reduction (EWL%), and related test indicators before and after laparoscopic sleeve gastrectomy remains unclear Methods: The General Information Questionnaire and Yale Food Addiction Scale 2.0 (YFAS 2.0) were used to provide data on 84 patients who underwent laparoscopic sleeve gastrectomy at the author"s hospital from September 2021 to March 2022 and their data on 6 months after Laparoscopic sleeve gastrectomy, including Gender, Age, BMI, Chest circumference, Waist circumference, Hip circumference,Upper arm circumference, Thigh circumference, Waist-to-hip ratio,Total bilirubin (TBIL), glycated hemoglobin ( Hemoglobin A1c, HbA1c), Total cholesterol (TC),Low den- sity lipoprotein cholesterol (LDL-ch), total bile acid (TBA), EWL% (Excess body mass reduction rate), the results were analyzed using questionnaires and statistical methods Results: The preoperative thigh circumference of the addicted group was higher than that of the non-addicted group (P <0.05). BMI, chest circumference, waist circumference, upper arm circumference and thigh circumference of the addiction group were significantly lower than those before surgery 6 months after surgery (P <0.05), and HbA1c, TBIL, ALT, AST, GGT and TBA were significantly improved after surgery (P <0.05). The EWL% of the addiction group was lower than that of the non-addiction group (P <0.05), and the ΔTBIL was higher than that of the non-addiction group (P <0.05).Conclusions: Most obese people have food addiction, and after laparoscopic sleeve gastrectomy, food addiction is significantly improved. The weight change of patients with food addiction is less than that of patients without addiction 6 months after surgery.