The jack-up integrated ocean ranch platform is taken as the research object, and the stability against overturning of the platform is analyzed. The capsizing moment and righting moment of the platform are calculated, the safety factor against overturning is analyzed, and the spud leg strength is checked. The calculation results show that the stability against overturning of the platform meets the specification requirements, which can provide reference for the environmental load calculation and stability against overturning analysis of the jack-up platform.