The utility model relates to a reinforced (rfd) shear type attenuator of wood structure building mortise and tenon joint belongs to the building structure field. Including parts such as fan -shaped steel sheet I, base plates, two sectorial elastic plates are connected respectively in the both sides of fan -shaped steel sheet I, and two blocks of fan -shaped steel sheets II are connected in the both sides of two elastic plates respectively, and the upper end of two blocks of fan -shaped steel sheets II is equipped with respectively rather than vertically connector plates, and connector plates is salient to the outside of fan -shaped steel sheet II, and the steel hoop is " omega " type, and the horizontal plate of steel hoop both sides is connected with connector plates respectively, and thebase plate passes through stud and is connected with horizontal steel plates. Under the earthquake, base plate and fan -shaped steel sheet part and with post the link to each other fan -shaped steelsheet part associative with the roof beam produce relative the rotation prior to mortise and tenon joint, glue the shearing dissipation energy between the elastic material through high damping. Underthe prerequisite of not haring the structure, mortise and tenon joint's power consumption ability has been improved, simultaneously the utility model discloses the device has can of the assembly, theadvantages such as installation and change of being convenient for.