Abstract: A pre-embedded connector formed by hot-rolled steel for concrete including a channel bar and an anchor-bolt connecting with it. The channel bar has a channel shape and has a notch. A T type of connecting screw bolt having a bolting portion is provided inside each of the channel feet of the two sides of channel bar. The channel bar is formed by hot-rolling. There are small teeth which are provided on inboard surfaces of the two channel feet of the channel bar, forming two inboard teeth-shape surfaces, which firmly connect with the two inboard surfaces of the bolting portions of the T type of connecting screw bolt. The anchor-bolt is installed on the top of the channel bar and the feet of the anchor bolt are fixed on a planar surface of the top of the channel bar by welding.