2. The advantage of 2.epc general contracting lies in emphasizing and giving full play to the leading role of design in the whole project construction process. Emphasizing and exerting the leading role of design in the whole project construction process is conducive to the continuous optimization of the overall project construction plan; Effectively overcoming the contradiction between design, procurement and construction is conducive to the reasonable connection of design, procurement and construction, effectively realizing the progress, cost and quality control of construction projects in line with the construction project contract, and ensuring better investment benefits; Defining the subject of construction project quality responsibility is conducive to investigating the project quality responsibility and determining the undertaker of the project quality responsibility.