The invention discloses an assembling component of a wooden house construction board. The assembling component comprises a first plate and a second plate which are parallel to each other. The first plate is connected with the second plate through a Y-shaped plate, the Y-shaped plate comprises a first connecting plate, a second connecting plate and a third connecting plate which diverge outwards from a same original point, one of the first plate and the second plate, the first connecting plate and the second connecting plate surround to form a triangular tube part, and the other one of the first plate and the second plate is connected with the third connecting plate. According to the assembling component of the wooden house construction board, the connecting strength of the first plate andthe second plate is improved by arranging the triangular tube part, the integral weight of the component is low, and the wood using amount is saved under the situation that the strength needed by plate structure using can be ensured.