Treatment solution for contact lenses

(57) [Problem] A contact lens treatment solution having an appropriate enzyme concentration, high detergency, good long-term stability and other physical properties of a solution, and having a balance in all aspects. And a method for treating the contact lens. A non-ionic or amphoteric surfactant is used as an A component in an amount of 0.05 to 2% by weight, a hydrolase is used as a B component in an amount of 10 -10 to 0.008% by weight, and a C component is a polyhydric alcohol. A treatment solution for a contact lens, comprising 5 to 30% by weight and 0.1 to 2% by weight of a boron compound as a D component.