The production technologies of high fructose, colorless, acid free concentrated apple juice were studied to acquire high fructose content apple juice by the experiment of sucrase digestion, resin decolourization and de-acidification. The best conditions of sucrase digestion, decolourization and de-acidification were determined by orthogonal experiment. The results suggested that the optimal condition of sucrase digestion were that pH was 4.5, apple juice concentration was 120g/L, sucrase concentration was 7mg/kg and temperature was 55℃; Decolourization condition of resin XDA-5 were that pH was 3.5, concentration of apple juice was 200g/L, temperature was 50℃ and fluid velocity was 150mL/h; The best absorption condition of fruit acid by resin D380 were that apple juice concentration was 300g/L, fluid velocity was 180mL/h and temperature was 25℃.