The construction control network of waterway engineering is an important issue in canal construction.Taking the establishment of Pinglu Canal construction control network as an example，we determine levels of horizontal control network and elevation control network based on the precision requirements of the construction layout of hub buildings.We quickly complete the field data collection of the control network by advanced measuring instruments，and use the measurement data of Guangxi continuous operating reference station(GXCORS) to centrally and uniformly process GNSS data，so as to efficiently complete the production processes of construction control network technology design，field data collection，internal data processing，accuracy analysis，and achievement provision.