The invention relates to an assembling system of a wood right-angle clamping plate of a polyurethane insulating box. The assembling system comprises a clamping plate feeding device and a clamping plate material taking device; wherein the clamping plate feeding device comprises a clamping plate stock bin, a transverse feeding mechanism, a longitudinal feeding mechanism, a pushing mechanism, a jacking and separating positioning mechanism and the like; and the clamping plate material taking device comprises a material taking grabbing hand for grabbing a right-angle clamping plate on the jacking and separating positioning mechanism, and the industrial robot is connected with the material taking tongs and drives the material taking tongs to move. Compared with the prior art, according to the system, the mechanical automation of the whole process of feeding, grabbing, assembling and positioning the right-angle clamping plate of the insulation box can be realized by matching the right-angle clamping plate of the insulation box, the labor intensity of manual operation in the existing assembling process is improved, the defect that the efficiency is low is overcome, the quality problems such as the connection strength and the assembly precision of the wood right-angle clamping plate due to the error of manual operation are solved, and the like.