In order to uniform the grinding fluid on the surface of grinding wheel and obtain maximum useful flow rate,the bionic structure grinding wheel with abrasive cluster was designed according to phyllotactic theory.By establishing the fluid field movement equations and boundary conditions of the flow field in the grinding zone and using computational fluid dynamics software (Fluent),the flow state of the grinding fluid on the surface of grinding wheel with phyllotactic grain pattern were simulated,and the result was compared with that of the grinding wheel with abrasive cluster of random,array and staggered configuration.The results show that when grinding by the grinding wheel with phyllotactic grain pattern,the grinding fluid flows along spiral grooves of phyllotactic pattern,which makes fluid flow divergence around,and is advantaged to the grinding heat conduction and abrasive chip removal in time.At the same grinding condition,the grinding wheel with phyllotactic grain pattern posses the most useful flow rate,which shows it has better cooling and lubrication function than other grinding wheels.