<p>Diabetes mellitus (DM) is a long-term metabolic condition that leads to high blood sugar levels, presenting significant health challenges worldwide. The investigation of alternative therapies, such as the use of medicinal plants, has been prompted by the drawbacks of traditional diabetic therapies, including side effects and expense. This review focuses on the advancement in trace element nanoparticles (NPs) synthesized by medicinal plants for managing diabetes. Trace elements like zinc, chromium, magnesium, copper, and selenium are vital for insulin signaling and glucose metabolism. By combining such components with nanoparticles, bioavailability and stability are improved, providing novel options for treatment. For example, selenium nanoparticles improve glucose absorption by imitating the function of insulin, whereas zinc regulates insulin. Additionally, copper oxide and magnesium oxide nanoparticles have anti-inflammatory and anti-oxidative qualities that help reduce the difficulties related to diabetes. The review also discusses the complementary effects of phytochemicals like flavonoids and terpenoids with trace elements, boosting their therapeutic potential. Medicinal plants are valuable sources for synthesizing these nanoparticles, providing eco-friendly solutions. Numerous opportunities exist to improve diabetes treatment by combining nanotechnology with conventional herbal therapy. While the preclinical research indicates potential for decreasing inflammation, and enhancing glycemic control, further clinical studies are requiring for the safety and effectiveness. This review highlights the potential role of medicinal plants-based trace elements NPs in the treatment of diabetes.</p>