PROBLEM TO BE SOLVED: To provide a method for preventing microorganism pollution of a catechin-containing drink, and a catechin-containing drink excellent in microorganism resistance.SOLUTION: A method for preventing the microorganism pollution of a drink includes adding a catechin, gallic acid and saponin. The catechin content of the drink is ≥350 ppm the gallic acid content of the drink is 200-50 ppm and the saponin content of the drink is 100-30 ppm.COPYRIGHT: (C)2013,JPO&INPIT【課題】カテキン含有飲料の微生物汚染を防止する方法、及び耐菌性に優れたカテキン含有飲料の提供。【解決手段】カテキン類と没食子酸とサポニンとを添加することを特徴とする飲料の微生物汚染防止方法。【選択図】なし