The invention relates to the field of aluminum hydroxide dry glue powder, and discloses cerium-containing aluminum hydroxide dry glue powder, a preparation method and applications thereof. The preparation method comprises: 1) preparing a mixed slurry containing nanometer cerium oxide and diol; 2) carrying out a co-precipitating reaction on an aluminum salt and a precipitating agent to obtain a solution containing an aluminum hydroxide sol, and carrying out first aging on the obtained solution containing the aluminum hydroxide sol; 3) mixing the product obtained in the step 2) and the product obtained in the step 1), and carrying out second aging; and 4) carrying out solid-liquid separation on the product aged in the step 3), and drying, wherein the diol is 2-amino-1,3 propanediol and/or Triethylene glycol. According to the present invention, with the method, cerium can be easily enriched on the surface of an alumina carrier and highly dispersed so as to improve the physicochemical properties of aluminum hydroxide dry glue powder.