The invention discloses a nut type anti-falling installation bracket. The nut type anti-falling installation bracket comprises a body; the body is provided with an inner ring, and internal threads matched with external threads of an electronic device are arranged on the inner ring; a plurality of higher clamping teeth and lower clamping teeth are arranged at the front end of the peripheral surface of the body, and the higher clamping teeth are higher than the lower clamping teeth; a clamping groove is formed in the position, close to each higher clamping tooth, of the body in a separated mode so that an elastic arm can be formed at the position, close to each higher clamping tooth, of the body. The nut type anti-falling installation bracket is easy to install and can prevent shaking loosening; force can be exerted better in the operation process through a handgrip structure, and the installation reliability of the electronic device is improved.