High-applicability fixing device for building curtain wall maintenance

The high-applicability fixing device for building curtain wall maintenance comprises a bottom frame and a fixing head, the fixing head is installed on the front face of the bottom frame, extending frames are installed on the two sides of the bottom frame, a set of fixing plates are installed on the tops of the extending frames, and a support is installed on the back of the bottom frame. By installing the extension frame, when a certain curtain wall needs to be fixedly maintained, a worker can tightly suck a suction cup to the curtain wall needing to be maintained, then the extension frame and the top frame are tightly connected with a good curtain wall nearby in an adsorption mode through a suction nozzle, and the extension frame and the top frame are matched with the frame through an upper inclined rod and a lower inclined rod; the function of stably supporting the curtain wall needing to be maintained is achieved, the device can get rid of height limitation and is directly fixed through the surrounding inta