The invention discloses an assembly type laminated wood constraint buckling-restrained brace, comprising an inner core, a peripheral constraint part and a filling steel plate; the inner core comprises a connecting steel plate, a connecting steel plate stiffening rib, a connecting end place, a connecting section stiffening plate, a buckling section, a limiting card, a transition section and a connecting section; the peripheral constraint part is an orthogonal laminated wood and is formed by combination of upper and lower laminated wood and left and right laminated wood; and the buckling section and the transition section of the inner core are arranged in the peripheral constraint part, the filling steel plate is arranged between the buckling section of the inner core and the upper and lower laminated wood of the peripheral constraint part, and a tiny gap is reserved between the buckling section of the inner core and the filling steel plate. According to the invention, the ductility and the energy dissipating capacity of a support structure of a wood frame are improved, and assembly type production can be carried out on the brace in a factory, so that field construction work load can be reduced, construction progress can be promoted, connecting quality can be ensured, and structure installation is facilitated. When being used in an earthquake region, the brace is convenient for post-earthquake repair and can reduce earthquake damage.