The invention discloses a flunixin meglumine taste masking orally-disintegrating preparation and a preparing method thereof, and belongs to the technical field of veterinary drugs. The preparing method of the preparation includes the steps that raw-material flunixin meglumine and taste masking agents are mixed in the weight ratio of 1:(2-4) to be subjected to taste masking treatment, taste-masking solid dispersion is made, then the taste-masking solid dispersion and auxiliary materials including water solubility fillers, disintegrating agents, flavoring agents, lubricants and the like are evenly mixed, and the preparation is obtained. Compared with the prior art, the taste masking effect of the flunixin meglumine taste masking orally-disintegrating preparation is achieved with the hot melt extrusion technology, and medicine is rapidly released in a buffer solution with the pH of 4.5 and still achieves medicine action; due to the adding of the auxiliary materials, the preparation has the advantages that disintegrating is rapid, mouthfeel is good, dissolution is rapid, swallowing is easy, irritation to the mouth mucosa is avoided, and the compliance of animal medicine taking is improved. In addition, the technology is advanced, easy to operate, safe, free of pollution and suitable for industrial large-scale production.