Large tonnage digging filling piles were used as structural foundation to ensure the integrity of four high-pier and long-span continuous rigid-frame aqueducts during the construction and the operating periods at the first stage of Qianzhong Hydro-junction project. Based on the similarity principle, the structure of large tonnage digging filling pile, referred to the pile construction experience of highway and building industry, and combined with its own loading features, was designed. At the same time, the integrity check and the vertical compressive bearing capacity test of engineering pile were accessed using crosshole sonic logging and core drilling method, and self-balanced method, respectively. The four pile foundations of continuous rigid frame aqueduct were completed in December 2012, and the pile quality tests showed that pile foundation structure was safe and reliable, which fully met the design requirements.