Drying is usually the last key step in the reprocessing of flexible digestive endoscopes, it is as important as the cleaning, disinfection and sterilization for flexible digestive endoscope in the control of healthcare-associated infection, but the existing drying methods can not fully meet the safety requirements. This paper summarizes the current research of drying of flexible digestive endoscope, analyzes the factors which affect the drying effect of flexible digestive endoscope, the storage methods which are conducive to the drying of flexible digestive endoscope, and the evaluation method of drying effect, so as to provide evidence-based basis for clinical practice and future research.