Security and protection device for building construction

The utility model belongs to the technical field of building construction security and protection, in particular to a security and protection device for building construction, which comprises a baffle plate, a T-shaped groove for limiting and stretching a square block is arranged at the upper end of the baffle plate, the baffle plate is connected with the square block through the T-shaped groove, arc-shaped blocks are arranged on two sides of the square block, and the arc-shaped blocks are connected with the baffle plate. Through the arrangement of a square block, the lower end of the square block is elastically connected with the baffle through a connecting spring, the two sides of the square block are limited to stretch out and draw back through limiting rods, and through the elastic effect of an elastic block and the connecting spring, when a falling object falls into the surface of the square block, the falling object can fall into the surface of the square block through elastic deformation of the limitin