Project cost achievement quality inspection method and system

The invention relates to a project cost achievement quality inspection method and system which are applied to the field of construction project cost, and the method comprises the steps: obtaining a building design file, obtaining building material data from a preset material name database, and obtaining a corresponding material name according to a building design model; querying the corresponding price data in the material name database, calculating the building auxiliary material cost corresponding to the building design model according to the size information corresponding to the building design model and the queried price data, and comparing the building auxiliary material cost with the building auxiliary material cost of the project cost book; and calculating an auxiliary material cost difference value between the building auxiliary material cost and the building auxiliary material cost in a preset project cost book, and scoring the building auxiliary material cost in the project cost book according to th