The invention relates to a building construction method, in particular to a construction method for a large steel plate embedded part of a wall. The technological processes comprise the steps that the large steel plate embedded part is machined and manufactured in a factory; paying off and positioning are conducted; the steel plate embedded part is hoisted in place; a triangle steel bar bracket is welded, and a steel plate is fixed; a wall steel bar around the steel plate is bound, a formwork is erected, and wall concrete is poured; after formwork removing, the mounting precision of the embedded part is measured for a second time; and a finished product is protected. According to the construction method, construction of the mounting quality and precision of the large steel plate embedded part is effectively controlled through control over all links in the construction process, the whole construction technology is simple and convenient in process, the working efficiency is high, the large steel plate embedded part of the wall is constructed by using the construction method, the construction progress is accelerated, meanwhile, materials are saved, cost is saved, the technical and economic effects are obvious, and the construction method is worth popularizing.