Background and Aims Over the past few years, bariatric and metabolic surgery has developed rapidly, as evidenced by the continuous emergence of new procedures and constant renewal of concepts. Meanwhile, the large amount of literature generated in this field has laid the foundation for further scientific research. Therefore, this study was conducted to analyze the research progress and hotspots in the field of bariatric and metabolic surgery through a bibliometric and visualized analysis of the English literature concerning this subject published in 2021, so as to provide a guidance for future clinical and basic science research.Methods The English literature of studies in the field of bariatric and metabolic surgery in 2021 included in the Web of Science database were retrieved, and the literature number, source of institutions, publication journals and specific key words were analyzed based on bibliometrics methods.Results A total of 5 335 papers were finally included for analysis. The top three countries with the largest number of relevant papers were the United States, China, and Italy. Harvard Medical School, University of Michigan, and the University of Sao Paulo occupied the top three positions of the most prolific institutions. The top three journals with the most publications were Obesity Surgery (n=510), Surgery for Obesity and Related Diseases (n=221), and Nutrition Metabolism and Cardiovascular Diseases (n=157). The United States was the country with the most extensive foreign co-operation. China ranked second in the world in terms of the number of published papers, but only ranked the twelfth in terms of foreign co-operation. Harvard Medical School (90 times), Mayo Clinic (70 times), University of Michigan (41 times) were the top 3 institutions with the most extensive foreign co-operation. In addition to focusing on surgery, bariatric surgery research in 2021 also included the fields such as cardiovascular medicine, nutrition, and oncology. "Once-weekly semaglutide in adults with overweight or obesity" was found to be the highest cited paper in citation network in the field of bariatric surgery in the 2021 (202 times). "Bariatric surgery versus intensive medical therapy for diabetes-5-year outcomes" was the most cited paper in co-citation network (179 times). Obesity Surgery (1 526 times, 510 papers), the New England Journal of Medicine (1 355 times, 2 papers), Surgery for Obesity and Related Diseases (1 246 times, 221 papers) were found to be the most cited journals in this field. In the key word co-occurrence network, “Gut Microbiota” and “Glucose” presented the current and future popular research direction and trend in this field. Sj?str?m L (277 times), Schauer PR (274 times), Buchwald H (223 times) in the co-cited network, were the most highly cited authors in this field.Conclusion In terms of publication volume in 2021, the United States still ranks the first in the world, and China ranks the second, but exhibits limited co-operation with other countries. In addition to focusing on surgery, cardiovascular medicine, nutrition and oncology are also the research priorities in this field. The association of intestinal flora with obesity and related metabolic diseases, as well as the effect of bariatric surgery on blood sugar improvement and its action mechanism, remain the current and future hot research topics.