The invention discloses a method for catalyzing synthesizing sec-butyl alcohol through cation exchange resin. The method comprises the step of carrying out ester exchange under the effect of the cation exchange resin with the sec-butyl acetate and the carbinol serving as the raw materials, so as to synthesize to obtain the sec-butyl alcohol. The sec-butyl acetate provided by the invention has the conversion rate up to 35 to 50%; and the method has the advantages that the reaction condition is mild, the corrosion to equipment is low, the selectivity and the activity of a catalyst are high, and repeated use is realized.