The synovial fluid in animal articular cavity are shear thickening fluids,has a effect on buffer energy absorption.Using functional bionic principle,animal synovial fluid in the synovial joint cavity were taken as biomimetic prototypes,corn starch dispersion system with quasi joint fluid properties were prepared.A vacuum oven was used to impose gentle stir and vacuumize.A ultrasonic cleaner was adopted to remove air bubbles.Rheological properties of corn starch were studied with rheometer.The steady rheological property,dynamic rheological property and thixotropy of corn starch dispersions in pre-gelatinized starch solution were tested.The influence of concentration,temperature and angular frequency on the rheological properties was investigated.And the mechanism of shear rheology in the dispersions was explored by comparison analysis method.The results indicate that the corn starch dispersion experiences two phases which are called shear thinning and shear thickening.The viscosity achieves minimum when the shear rates or stresses reach the critical value.It also shows that the higher the concentration,the greater the viscosity is.The viscosity reduces with the increase of the temperature.With the increase of the angular frequency,the viscosity decreases.The aim of the study is to provide a theoretical basis and technical support for bionic engineering.