Type 1 diabetes is a serious disease worldwide. This disease occurs when the immune system attacks the β-cells of the endocrine pancreas leading to insufficient insulin production. Most current treatments lower blood sugar levels, but cannot  restore the normal function of the pancreas. The disease may further cause  heart, nerve, and kidney problems. Research shows that stem cells can help rebuild β-cells and make them functional. Such regenerative strategies aim to restore natural insulin production and treat the underlying cause of the disease. These methods have the potential to create treatments that modify the course of diabetes. This research studies how stem cells can be used to regenerate β-cells and treat diabetes. A literature review was done in PubMed focusing on β-cell regeneration, stem cell therapy, and transplantation strategies. The main focus was on recent experimental studies and early clinical trials evaluating its safety and effectiveness. Studies show that β-cells made from stem cells can produce insulin. The cells survive better when protected from the immune system. Research in animals shows that β-cell transplants improve glucose control. Problems involve immune response, keeping cells working over time, and producing enough cells. It has already worked in some patients, but researchers are still facing challenges  in immune rejection, long-term survival, and large-scale production before routine medical use. Encapsulation and immune-modulation technologies are being developed to improve graft survival. Using stem cells may help restore the pancreas and β-cells function in diabetes. The methods may make blood sugar more stable and reduce complications. These innovative treatments could make life easier and healthier for patients. These advances show significant progress toward future clinical use in diabetes care.