The crystallization of ammonium paratungstate is the main intermediate product in the preparation of blue tungsten oxide, ammonium tungsten bronze and tungsten powder. The particle size and bulk density of tungsten products are dependent on the original Chemicalbook material, ammonium paratungstate. The properties of ammonium tungsten bronze prepared by ammonium paratungstate containing different crystal water are very different. The study of Di Yuying et al. showed that the ammonium tungsten bronze made from pentahydrate and sevenahydrate ammonium paratungstate had good performance