The invention discloses a method for preparing m-nitrophenol ester by a solid-phase reaction system. According to the invention, m-dinitrobenzene and carboxylate are taken as raw materials, the methodcomprises the following steps: 1) m-dinitrobenzene and carboxylate are mixed and ground at the temperature of 10-80 DEG C for 20-180 min; wherein the mol ratio of m-dinitrobenzene to carboxylate 1:1-1:5; and 2) the ground material is washed with absolute methanol and then filtered, after steaming methanol of a filtrate, through column chromatography separating, ethyl acetate/petroleum ether is taken as an eluant for separation by passing a column, and an eluant is subjected to pressure reduction steaming to obtain the m-nitrophenol ester. The m-nitrophenol ester has the advantages of concisetechnology, no solvent, short reaction time, mild condition, high yield, and good selectivity.