Due to the good biocompatibility and biodegradability of hydrogel

as well as its three-dimensional network structure which is similar to the extracellular matrix

the hydrogels have promising potential applications in various fields

such as biomaterial

pharmaceuticals

and biomedical. Rheology describes the flow and mechanical properties of material. The viscoelastic response of hydrogel is sensitive to the change of structure. Therefore

rheology is an important way of analyzing hydrogels. In this review

we summarize the applications of rheology in hydrogels research

introduce the methods of studying rheology of hydrogels

discuss the factors that influence the rheology behaviors of hydrogels

and look forward to the future of hydrogel rheology.