In this study, overweight and obese patients with endometrial cancer treated with fertility- sparing therapy were randomly divided into two groups. The test group was given weight management, while the control group was given routine care. Relevant information such as body morphology and composition, glycolipid metabolism, molecular typing and tumor outcomes of the subjects were collected. By evaluating the tumor outcome and changes in glycolipid metabolism indicators, to confirm the effectiveness and safety of weight management for overweight and obese patients with endometrial cancer and treatd with fertility preservation.