Erosion wear is a kind of material wear phenomenon caused by the interaction between solid surface and fluid containing solid particles with a certain velocity, which exists widely in industrial production and is an important reason for failure and damage to many mechanical devices. Especially under gas-solid two-phase flow conditions, bent pipes suffer from severe erosion wear, greatly reducing their service life and even causing major safety accidents. In order to provide reference for the study of erosion wear and anti-erosion wear of equipment under multiphase flow conditions, this article reviewed the current research status and progress on erosion wear of bent pipes under gas-solid two-phase flow conditions in recent years. Moreover, the main methods currently used to study the erosion wear of gas-solid two-phase flow bends were described, the advantages and disadvantages of commonly used experimental research equipment and numerical simulation methods were summarized emphatically. At last, the prospects for future research on erosion wear of bent pipes under gas-solid two-phase flow conditions were presented.