In order to solve such problem as cracks caused by temperature and shrinkage stress of super-long concrete structure, a super-long concrete structure construction plot project in Beijing is taken as an example, the construction process of the original design post-pouring belt is optimized by the alternative bay construction method, focusing on the design principles of the alternative bay construction method, the control of concrete raw materials and the optimization of the mix ratio, and the key technical issues such as temperature, shrinkage stress and compartment length division involved in the construction of the alternative bay construction method, and the maintenance measures are taken in time through on-site construction control and temperature measurement feedback. The results show that the pouring of super-long concrete structures by alternative bay construction method cannot only meet the anti-cracking requirements of the structure, but also ensure the smooth implementation of the project. The results can provide a certain reference for other similar engineering applications.