Differentiation and sequential anatomical features of the fruit buds in "Superior“ grape variety were investigated. The entire process of fruit bud differentiation was classified into seven stages and completed in two growth seasons. Differentiation of the inflorescence pn'mordium reaches its completion in the first season. while differentiation of the floral primordium occurs during the second growth season. The results indicate that most of the proximally inserted fruit buds at basal pan of the shoot are more advanced in differentiation than those inserted at distal part of the shoot. This study indicates that the dissecting technique of the fruitful buds during winter can be a reliable guide of yield in the subsequent growth reason.