In a contact lens disinfection system using hydrogen peroxide, the neutralization efficiency of such hydrogen peroxide can be increased, and the amount of metal used in the metal catalyst used can be reduced, thereby advantageously saving resources. It is a solution issue. While the contact lens to be disinfected is immersed in a hydrogen peroxide-containing disinfectant solution having a hydrogen peroxide concentration of 1 to 10%, the hydrogen peroxide present in the disinfectant solution is brought into contact with the metal catalyst to neutralize it. In the contact lens disinfection system, the disinfecting solution contains an organic carboxylic acid having a structure in which a hydroxyl group and a carboxyl group are bonded to one carbon atom or a salt thereof, and the pH of the disinfecting solution is adjusted. It adjusted to 6-8, and also it comprised so that the disinfection liquid after the said neutralization process might have an osmotic pressure of 250-350 mOsm.過酸化水素を用いたコンタクトレンズの消毒システムにおいて、かかる過酸化水素の中和効率を高めて、用いられる金属触媒の金属の使用量を低減せしめ、以て、省資源化を有利に図ることが、解決課題である。消毒処理されるべきコンタクトレンズを、過酸化水素濃度が１～１０％である過酸化水素含有消毒液に浸漬せしめる一方、かかる消毒液中に存在する過酸化水素を金属触媒に接触させて中和するようにしたコンタクトレンズの消毒システムにおいて、前記消毒液に、一つの炭素原子にヒドロキシル基とカルボキシル基が結合してなる構造の有機カルボン酸若しくはその塩を含有せしめると共に、該消毒液のｐＨを６～８に調整し、更に前記中和処理後の消毒液が２５０～３５０ｍＯｓｍの浸透圧を有するように構成した。
