Abstract: Self-centering brace has greater stiffness and bearing capacity after being activated. The brace connection， beam and col? umn are subjected to more complex forces and higher risk of damage. A novel frictional prefabricated connection node in self-center? ing braced steel frame is proposed to control ultimate axial force of the self-centering brace by frictional slipping. It provides addi? tional energy dissipation for the whole structure. Configuration， assembly and working principles of the connection nodes are de? scribed. By numerical simulation， its seismic performance is studied. The effects of design parameters of the connection node on performance are analyzed. The results show that the hysteretic response of the self-centering braced steel frame with the novel con? nection node is fuller. The energy dissipation capacity of the overall structure is increased by 20.81%. The actual limiting effect of the connection node on total shear force reaches 17.56%， effectively regarding the plastic development of connection node region. By changing the friction coefficient of the friction plate and the preload force of the high-strength bolts of the connection node， the slipping displacement and force can be adjusted.