Abstract: In order to fully develop mopan persimmon resources,the extraction technology of pectin from mopan persimmon wine processing waste-persimmon residue was studied. Pectin from mopan persimmon with the method of ammonium oxalate,single factor experiments of pectin extraction were carried out to get the effects of reaction temperature,time,pH,solid-liquid ratio,concentraction of ammonium oxalate. Response surface experiments were designed to optimize the parameters of extraction. The optimal condition was:0.60% of ammonium oxalate,pH1.90,95℃,4 h of time,1:15 of solid-liquid ratio,under these conditions the extraction rate of crude pectin was 11.2%±0.3%.Through this method,the pectin in the fruit residue could be extracted effectively,which provided an idea for the comprehensive development of the mopan persimmon.