The invention discloses a novel fabricated energy dissipation reinforcing member for an ancient wood building. The novel fabricated energy dissipation reinforcing member for an ancient wood building is composed of a woody friction energy dissipation damper and connecting parts. The woody friction energy dissipation damper is composed of an upper core part, a lower core part and a constraining part, and the upper core part and the lower core part are fixed and applied with pre-tightening force by the constraining part after being combined. The woody friction energy dissipation damper is connected with perforated connecting surfaces of components 1 through self-tapping screws, the components 1 are connected with components 2 through bolts, and the connecting parts are fastened to the beam and column of an ancient wood building. The novel fabricated energy dissipation reinforcing member for an ancient wood building can improve the integrality of a structure as a support; meanwhile, under the seismic action, through stretching or retracting of the novel fabricated energy dissipation reinforcing member for an ancient wood building, mutual friction of contact surfaces of the reinforcing member is generated to dissipate energy, and thus the damping effect is achieved. According to the scheme, the novel fabricated energy dissipation reinforcing member for an ancient wood building is clear and definite in objective, convenient to manufacture and construct, accordant with the ancient building protection principle and capable of improving the seismic performance of an ancient wood building and can be widely applied to the field of ancient building wood structure damping and reinforcing.