The invention discloses the methods of preparation for a superfine bismuth vanadate yellow pigment, the characteristics of its bismuth nitrate, partial vanadate or vanadate are the main raw material. Through controlling of its appropriate pH and temperature to get the Ultra-fine particles,which composed of bismuth vanadate yellow pigments.well by adding surfactant or changing vanadium source, itcan further control particle morphology, which were prepared by a diameter of 50-150 nm spherical particles, 100-200 nanometer length, width 50-100 nanometers Flake Vanadate Bismuth or length of 200-300 nm rod bismuth vanadate. The preparation of this invention is a simple process, and can be controlled morphology, the bismuth vanadate can meet the needs of different occasions, which can be widely used in the automotive topcoat, ink, paint and other requirements for a higher size area.