Hook connector for building installation and building installation structure

The invention provides a hook connector for building installation and a building installation structure. The hook connector comprises a connecting plate and a mounting plate which make a right angle, the top end of the connecting plate is provided with a hooking limit notch on the hook-connecting part, the mounting plate is provided with longitudinal long mounting holes, internal teeth along the walls of the long mounting holes and a concave-convex positioning structure for positioning and slip prevention on the surface around the holes, and the concave-convex positioning structure corresponds to the pressing part of a fastener. The structure of the hook connector is simple, the mounting position of the hook connector can be adjusted, the errors in a building installation system or deviations caused by position adjustment can be corrected, the hook connector can have positioning relation with the fastener, does not need to be welded, and cannot get loose when connected, thus enhancing the safety of installation, and the hook connector is also provided with the function of a secondary connector and can limit a hook, thus fundamentally solving the slipping problem of the hook and simplifying a connecting structure of a curtain wall system. The invention also puts forward a fire-proofing and heat-resisting solution for the connecting structure, and therefore is applicable to various fire areas.