The invention discloses an inverted arch large section drag die concrete construction method for a plunge pool. The method includes the following steps of site cleaning, survey and setting out, installation of a drag die supporting system, installation of a drag die traction system, installation of a drag die, concrete pouring and plastering, die removal and maintenance. The construction method utilizes the drag die supporting system, the drag die traction system and the drag die to form a novel drag die concrete construction system. In the pouring process of an inverted arch bottom plate of the plunge pool, the drag die slowly moves from the center of the inverted arch bottom plate to a bank slope with pouring, lifting and initial setting of concrete in each germ layer, and meanwhile concrete plastering and maintenance are completed; pouring and initial setting of the concrete are completed by a drag die body, and plastering and maintenance are performed through an operation platformafter initial setting of the concrete. Through field construction practices, the method can meet the design requirements, effectively improves the construction efficiency and quality, and reduces theconstruction difficulty.