The anchorage area is an important supporting project of the inland river plain channel，mainly including the waters where ships are moored and mooring facilities. At present，the gravity structure is often used in the anchorage area of the inland river channel. The traditional gravity-type structure needs a large quantity of concrete and high cost，and a temporary cofferdam should be installed in the local navigation section to meet the demand of dry land construction. The inland plain waterway mostly undertakes tasks of flood control，irrigation，and drainage at the same time. The construction period of temporary cofferdam in the river is long and affects flood control during the flood season. In view of the problems existing in the traditional anchorage structure，the pontoon floating structure and high-piled pier structure are innovatively adopted in the “three-to-two” navigation channel project from the Grand Canal Jining to Tai’erzhuang district（Jining section）. Compared with the traditional gravity structure，it can be constructed on water and does not need temporary construction of cofferdam. Meanwhile，it is more favorable for the river flood discharge and has better adaptability to the foundation，which provides a new idea for the selection of the structural form of inland waterway anchorage area and may serve as a reference for the construction of similar projects.