Due to lack of researches on the structural performance of adhesively repaired foam core sandwich composite,both a finite element model and a stability analytical model were built after repairing the sandwich composite and compressive experiment.The two models were validated by comparing them with the experiment.The adhesive was simplified in the finite element model.The results show that the critical compressive load can be obtained efficiently by using the stability analytical model for sandwich structures.The main failure modes of the adhesively repaired foam sandwich composite under compressive load are the first-order and second-order buckling.The finite element analysis model and the stability analytical model of adhesively repaired sandwich composite are accurate enough and have good potentials in engineering fields.