Objective: It systematically introduces the international research progress of low-value healthcare，so as to provide references for reducing the burden of national health expenditure. Methods: Literature review is used to comprehensively analyze the international practice experiences of the Wise Choice Movement，"DO NOT DO" and value evaluation framework，and summarize the mainstream identification methods and intervention methods of low-value healthcare. Results: The international practice of low-value medicine can be summarized into the "negative list" formed by expert consensus led by clinical professional associations and the value framework based on net health benefits. The concepts，characteristics，mechanisms and deficiencies of the two types of research are summarized. Conclusion: It provides suggestions for low-value healthcare; improving the clinical standardization path; using big data tools; improving patient engagement and trust.