To summarize the metabolic and bariatric surgery cases performed in multiple regions of China in 2024. Methods Based on the data registration work of the Greater China Metabolic and Bariatric Surgery Database (GC-MBD), this registry report evaluate the prevalence of metabolic and bariatric surgery in multiple regions of China, as well as the follow-up data from 2018 to 2024. Demographic characteristics, obesity-related diseases, surgery information and follow-ups data were statistically described and analyzed. Results In 2024, 68 centers from 24 provinces/province-level municipalities in China registered a total of 7 762 valid cases to GC-MBD. The patients’ median (minimum, maximum) BMI before the surgery was 38.6 (25.1, 82.1). The cases of female patients were 5 463 (70.5%), with median (minimum, maximum) age of 33 (12, 69) years, while the cases of male patients were 2 283 (29.5%), with median (minimum, maximum) age of 32 (10, 69) years. Among all valid cases, 22.1% of patients had history of type 2 diabetes, 90.5% of patients had history of fatty liver disease, 50.7% of patients had history of hypertension, 53.1% of patients had obstructive sleep apnea syndrome (OSAS), and 17.1% of female patients had history of polycystic ovary syndrome (PCOS). Among all procedures, 87.60% were sleeve gastrectomy (SG), 3.59% were sleeve gastrectomy with transit bipartition (SG-TB), 3.43% were Roux-en-Y gastric bypass (RYGB), 2.56% were one anastomosis gastric bypass (OAGB), 2.14% were sleeve gastrectomy with jejuno-jenunal bypass (SG-JJB), 0.44% were single-anastomosis duodenal-ileal bypass with sleeve gastrectomy/one anatomosis duodenal switch (SADI-S/OADS), 0.05% were sleeve gastrectomy with duodenojejunal bypass (SG-DJB), 0.01% were sleeve gastrectomy with loop duodenojejunal bypass (SG-LDJB), and 0.18% were other operation types. There were significant differences in the trends of excess weight loss rate (%EWL) and total weight loss rate (%TWL) over time among different obesity severity groups (mild, moderate, severe, and very severe) (P=0.004, P<0.001). Conclusion Based on the analysis of the 2024 registry report, patients who underwent metabolic and bariatric surgery in China are mainly middle-aged and young, with a majority of female patients and a high proportions of obesity-related diseases before surgery. SG still is the mainstream surgical procedure in China. The weight loss level in the mid-to-long term after surgery is significant, with differential characteristics observed among different severities of obesity. The 2024 registry report reflects the disciplinary development trends of metabolic and bariatric surgery in China, providing an important basis for comparison with previous annual and international data.