Thixotropic behavior of semi solid metal with non dendritic structure was described briefly. The principle of the mesh structure agglomeration and disagglomeration of solid particles of semi solid metal was discussed in detail. The rheological patterns of thixotropic behavior include the time dependent behavior pattern and the Kumar rheological pattern etc. The psychology function and the dynamic function are also given. The function of agglomeration and disagglomeration of mesh structure were expounded. The shear force acted on the solid liquid two phases was discussed. At last

the application status and latest progress of thixotropic characteristics of non dendritic semi solid metals were surveyed.