Blue ink powder and preparation method thereof

The invention relates to a blue ink powder and a preparation method thereof. The preparation method of the blue ink powder comprises the following steps: heating 60-90 parts of resin, 0.2-10 parts of phthalocyanine blue, 1-10 parts of charge control agent and 5-40 parts of polypropylene wax to melt, stirring the molten materials to disperse evenly, performing spray granulation with an atomizer, cooling to obtain ink powder particles, adding flowable agent for modification and finally obtaining the ink powder product through air classification. The ink powder particles prepared by the invention has uniform particles, good low-temperature fixing effect, more than 90% of transfer printing rate small processing equipment investment, simple process operation, short flow, low production cost, non-pollution to the environment in preparation process and maximum use of the raw materials.