Anaplastic lymphoma kinase (ALK) inhibitors are regarded as effective drugs for the treatment of ALK-positive NSCLC. However,the emergence of drug resistance has limited its further clinical application. This article briefly introduces the resistance mechanism of ALK inhibitors including acquired secondary mutations,gene amplification,bypass signaling pathway activation and reviews the recent advances on the reversal strategies such as drug combination,developing novel PROTACs to overcome drug resistance,so as to provide some reference for the development of ALK inhibitors.