Abstract: As the obesity epidemic and related diseases increase, various academic organizations have formulated guidelines and consensus on relevant control notices, all of which regard the reduction of calorie intake as the basis of obesity management. However, there are various ways of diet management, and no specific diet management plan is recommended in the consensus. Most guidelines recommend a continuous energy restriction, but patients have poor adherence and rebound after short-term weight loss. It is a question of whether intermittent fasting is better than continuous energy restriction. Recently, the New England Journal of Medicine published an important review of intermittent dieting, which summarized the understanding of intermittent dieting in the past 20 years, and systematically introduced the strong evidence of extended life, metabolic benefits and organ protection of intermittent diet in animal experiments and human studies.