Double-layer visual isolating switch

The invention provides a double-layer visual disconnecting switch. The double-layer visual disconnecting switch comprises a shell, and an operating mechanism, a sliding block and a contact system which are arranged in the shell, the shell comprises a base, a middle cover and a transparent upper cover which are covered in sequence, a lower cavity is defined by the base and the middle cover, and an upper cavity is defined by the middle cover and the transparent upper cover; the contact system is arranged in the upper cavity, the operating mechanism and the sliding block are arranged in the lower cavity, layered design is achieved, structural layouts in the upper cavity and the lower cavity do not affect each other, the contact system does not need to give way to the operating mechanism and has enough space layout, and structures of components such as a contact knife and a movable contact can be unified so as to reduce types of parts. And the state of the contact system in the upper chamber can be visually and c