Frailty is a clinical syndrome with decreased ability of maintaining homeostasis and increased vulnerability to stress as a result of declined physiological reservation and function of multiple systems in the elderly. It can lead to higher risks for such adverse outcomes as disabilities and ultimate death. Frailty is reversible, and early identification and intervention is critical. Rehabilitation nutrition refers to the improvement of nutritional status, sarcopenia, and frailty by using combined nutrition and rehabilitational exercise. This article reviews the progress in research on exercise, nutrition and rehabilitation nutrition intervention for the patients with frailty.