The invention particularly relates to electronic grade high-purity phosphoric acid synthesis equipment prepared from a terbium antimony doped material. The equipment comprises a stirring crystallizer,a vacuum pump, an acid discharge pump, an acid regulation tank and a circulation pump, wherein the stirring crystallizer, the acid discharge pump, the acid regulation tank and the circulation pump are sequential in circulation connection through a pipeline; the vacuum pump is connected with a position above the lower section of the stirring crystallizer through a pipeline; the stirring crystallizer comprises a cover plate, a crystallization chamber, a stirrer, a crystal washing device and a suction filtering chamber. The equipment has good economic efficiency.