During the construction of cast-in-place rock socketed pile in hydraulic wharf，it is necessary to set up a drilling platform. At present，computer information technology is widely used in the field of civil engineering，however，the use of software to analyze the stability of structures is not iniform and there are many types. In order to solve this problem，the software of structure checking is studied. Midas Civil is used to calculate the structure of the drilling platform，analyze the stress condition of the drilling platform in detail，deduce its stability theoretically，and get the functional requirements under different working conditions. It has been proved that Midas Civil has obvious advantages in structural model analysis and combination checking calculation，and the characteristic results meet the use requirements.