Provided is an organ preservation solution for use in transplants which can effectively prevent the occurrence of ischemia reperfusion injury. An organ preservation solution is prepared which contains a blend of the following components: (a) potassium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate, L-ascorbic acid, L-ascorbic acid phosphoric acid ester and D-glucose; (b) potassium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate, L-ascorbic acid, L-ascorbic acid phosphoric acid ester, glycine, and D-glucose; (c) potassium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate, L-ascorbic acid, L-ascorbic acid phosphoric acid ester, L-cysteine, glycine, and D-glucose; or (d) potassium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate, L-ascorbic acid, L-ascorbic acid phosphoric acid ester, L-cysteine, glycine, iron compound and D-glucose.