In this paper, a forehearth coloring of tank furnace for producing glass mosaic have been studied by the analogue theory. The stripper apparatus have been installed in the forehearth of model. The influence of numbers, revolting direction of the strirrers on the glass temperature field and homogeneity in discharge outlet were studied. Some basic data have been obtained. It lay the foundation for the forehearth coloring used in the tank furnace.