The invention discloses a sequence construction method for large area reinforced concrete floors. According to construction, areas with length and width which are both less than 50m are numbered one by one along any direction, plate steel bars can be sequentially bound one after another based on a construction arrangement, a concrete casting is performed in a sequence mode, an ordinary construction joint processing method is utilized between a 9m laminate block and a 15m laminate block, each side of each plate construction joint is provided with a 'rapid and easy setback grid' the plate steel bars are constructed according to a normal plate steel bar binding method, a disconnecting process is absent, a concrete pouring utilizes a construction method of 'one inclined plane, a continuous pouring, one-time reaching top', a concrete inclined plane slope is 1:6, before an initial setting of the concrete, the surface of the concrete is subjected to a rolling by an iron roller, and the concrete is flatly rubbed at least three times by a wood float after the concrete is hardened. The method has the advantages that the cracking effect can be effectively controlled, the construction is convenient, the construction period is shortened, the cost is reduced, and the quality is reliable.