Square core for preventing intelligent door lock from being unlocked violently and intelligent door lock adopting square core

The utility model relates to a square core for preventing an intelligent door lock from being unlocked violently, which comprises a square core, an annular groove is arranged on the outer wall of the square core along the circumferential direction of the square core, and the square core is divided into a first insertion portion used for connecting a spring bolt control component of the intelligent door lock and a second insertion portion used for connecting a handle of the intelligent door lock by the annular groove. A connecting part which cannot bear torque larger than 50 N.m is formed in the position, corresponding to the annular groove, of the square core, the front end of the connecting part is connected with a first inserting part, the rear end of the connecting part is connected with a second inserting part, and the first inserting part, the connecting part and the second inserting part are integrally formed. And if the intelligent door lock adopts the square core, a thief cannot violently rotate the h