Abstract: Sampling and determinationwas implemented on seeds of Torreyagrandis ‘Merrillii’ (Pan’anchangfei) in Pan’an, Zhejiang province,during July and September of 2016, focusing on the growth characters from farctate period to ripe period, the difference and variation of seed traits among different clones, the characters of heredity and variation between mother plant and its filial generation. The results demonstrated thatthe average single mass of seed, nut and kernelreached the maximum at mature period, and the coefficient of variation got the minimum. Determinations and analysis on seed traits resulted that there were evident differences between every clone of ‘Pan’anchangfei’ and T. grandis in single fresh seed/nut mass, single dry seed/nut/kernel mass, vertical/cross diameter of seed/nut, shape index of seed/nut, ratio of dry nut and seed,and there were large differencesamong different clones. The filial generation of plus tree had higher inheritance and lower variation in seed traits.