To provide a protection cover for spectacles capable of effectively and inexpensively fulfilling a dustproof function to protect eyes from pollen in a state where normally used spectacles (especially, powered spectacles) are worn.

The protection cover for spectacles 1 is equipped with a nearly planar spectacle member 11 attachably/detachably provided to cover over the spectacles 3 and positioned in front of the front frame 31 of the spectacles 3 and an extension member 12 extended backward from the periphery of the member 11 in a state where the spectacles 3 are covered with the cover 1. At least the backward peripheral end of the member 12 is formed of an elastic member, and the member 12 is equipped with a 1st attaching member 13 for attaching the member 11 to the bridge 32 of the spectacles, the 1st attaching member 13 being attached at a position opposed to the bridge 32 on the member 11 in a state where the spectacles 3 are covered with the cover 1. For example, a velcro fastening may be utilized as the 1st attaching member 13.