The invention provides a method for preparation of a tungsten bronze particle with a template agent. First, a cheap template agent is subjected to thermal reaction to synthesize sea urchin-shaped Ax-MyWO3Bz tungsten bronze particle, the sea urchin-shaped particle is composed of nanorod particles, the length of the nanorod is mainly distributed in the range of 1-200 nm, and the diameter is 10-30nm. The synthesized sea urchin-shaped tungsten bronze powder does not contain abnormally grown particles, and is free of agglomeration during storage and aftertreatment, in practical application, and through simple ball-milling or heat treatment, the sea urchin-shaped particle can be converted into a nanorod particle with excellent dispersibility. The film prepared from the particle has excellent transparency and heat insulation performance, can be used for preparation of transparent and heat insulation coatings, transparent and heat insulation films and other heat insulation compounds, heat insulation curtains and the like. In addition, the sea urchin-shaped tungsten bronze particle has large specific surface area and good effect of photocatalytic degradation of organic matters, can be widely used in wastewater treatment, air purification and other environmental purification fields.