P-aminobenzoate potassium was synthesized from p-nitrotoluene through oxidation,reduction, salt formation and crystallization. The total yield was 77.5%.The procedure is practical.

• 以对硝基甲苯为原料；经氧化、还原、成盐、结晶等反应；合成对氨基苯甲酸钾。该工艺操作简单；条件温和；总收率可达77.；5%25；具有较强的实用性。