Abstract: An approach that combines reaction-diffusion with Lengyel’s rea-l time fur to render the fur with biological pattern effect is presented.Firstly,we generate biological pattern texture on model surface by reaction-diffusion；then introduce the texture to the fur rendering process to produce pattern effect on fur.In addition,we improve Lengyel’s method by employing vertex shader and pixel shader, which not only speeds up the rendering rates,but also allows more accurate computation of fur shading.