Abstract: In this paper, the elastic stability of reinforced concrete silo shell roof is analyzed using finite-element model. The elastic critical buckling loads of the shell roof are calculated. Based on the limit analysis theory, the method for calculating the ultimate load of silo shell roof is also presented. The analyses of practical applications indicate that the reinforced concrete silo shell roof in common practical use is always elastic stable, and the limit analysis theory should be used to assess the design proposal.