Analysis of turbulence characteristics in the confined space has important influence on strengthen grinding, and it is a main point and difficult point in the research of fluid theory. For the purpose of studying the technological parameters of strengthen grinding, and obtaining its characteristic signal group, calculation and spatial distributing simulation of turbulence’s kinetic energy entropy in the confined space is investigated. Through the meshing of flow field the turbulence particle is gotten, then with the velocity and direction of particle motion, turbulence kinetic energy under model and the given boundary conditions is calculated. After determining the kinetic energy’s three-dimensional projecting components and the energy value’s occurrence probability, the integrating process in the flow field’s effective space is conducted then a computing formula of kinetic energy entropy is deduced. In experiment the turbulence caused by strengthen grinding is used as an example, the kinetic energy entropy is calculated and revised in the whole flow field; and the computer simulating of entropy’s spatial distribution is conducted in Fluent 6.2.23 environment. Thus the influence mechanism and relationship between turbulence kinetic energy entropy’s calculation and its spatial distributing simulation are established, and the technology reference and research idea for turbulence monitoring in strengthen grinding are also be provided.