American Diabetes Association (ADA) has announced the new version of the standards of Medical Care in Diabetes-2021. The guideline of the diabetic patients with Older Adults seems to be used for a wide range of clinical practice. Among them, several impressive comments were found, where “Once-daily basal insulin injection therapy is associated with minimal side effects and maybe a reasonable option in many elder patients”. Recent topic includes Dual Action of Liraglutide and insulin degludec (DUAL) studies, and Xultophy has shown beneficial efficacy. Consequently, the trend would be developed from multiple daily injection (MDI) method to once daily injection.