The slurry reactor is an important type of gas-liquid-solid multiphase reactors. It has the advantages of simple construction

good mass and heat transfer performance

and feasibility of on-line addition or replacement of catalysts. It has received attentions from both academic and industrial circles. This paper reviews the study of hydrodynamics of slurry reactor

including flow regime

gas holdup

bubble behavior

and mass and heat transfer rates. The effects of temperature

pressure and liquid properties on the hydrodynamics are discussed. Novel slurry reactors

such as multi-stage slurry reactor and slurry reactors with internals are introduced. The industrial applications of slurry reactor on bulk chemical and fine chemical industries and environmental processes are summarized. Perspectives are given on the potential application and future research of slurry reactors.