Abstract: To investigate the effect of different 1- MCP treatment time on the flesh softening of Fuji apples, the flesh texture parameters of Fuji apple with different 1- MCP treatment time by a texture analyzer through texture profile analysis ( TPA) was studied. The results showed that the flesh crispness had significantly positive correlation with cohesiveness, cohesiveness had significantly positive correlation with chewiness. The adhesiveness had negative correlation with the other parameters, the resilience had positive correlation with chewiness, chewiness had significantly positive correlation with hardness, cohesiveness, resilience.1- MCP treatment could delay the drop of fruit crispness, hardness, cohesiveness, resilience, chewiness, and the increase of adhesiveness, accordingly to inhibit fruit flesh softening, but the effect was reduced by prolonging treatment time. Therefore, 1- MCP treatment should not exceed 5d at ambient temperature.