The invention provides a method for synthesizing n-butyl acetate through an ester exchange path and relates to a method for synthesizing the n-butyl acetate. According to the method provided by the invention, a synthetic route for catalyzing methyl acetate and n-butyl alcohol ester to be subjected to exchange to synthesize the n-butyl acetate by taking solid alkali as a catalyst is explored. The catalyst is load type metal solid alkali with a mesoporous molecular sieve compound structure; the catalyst is used for catalyzing the methyl acetate and the n-butyl alcohol to react to synthesize thehigh-purity n-butyl acetate and has extremely high reaction activity and the catalytic efficiency can reach 50g/gh or more. The mass transfer and dispersion capabilities of reaction raw materials anda product can be improved. Meanwhile, the load type alkali metal catalyst has a high-dispersion outer surface active center and can be used for specially catalyzing the methyl acetate and the n-propylalcohol ester to be subjected to the exchange to synthesize the n-butyl acetate; an obtained crude product contains the n-butyl acetate and methanol and the selectivity of the n-butyl acetate reaches99 percent or more. A reaction process is clean and efficient and has no pollution and no byproducts; the method has a good application prospect and is suitable for industrial production.