A new method is introduced for measuring convection velocity of granule in the process of vibration, which is named seeking trails of tracer particles. The coordinates of particles can be accurately identified, and unmatched particles can be unidentified by use of color attribute assisted by minimum deformation degree of triangular, which realizes the tracking and description for moving particles in different moments and spaces. In terms of obtaining particle location coordinates, ImageJ has the characteristics of fast processing and easily amending. Moreover, it has the unique superiority compared with other identification methods.