Abstract:The study of the relationship between the accumulation of storage proteins and the formation of vigor of peanut seed showed that the process of formation of seed vigor was not a symmetrical process,and the germination capability was completed before 40 days after pegging (DAP)and vigor formation speeded up after 40 DAP. The synthesis and accumulation of storage proteins coincided with the formation of seed vigor. With the accumulation process of different storage proteins, arachin was degraded more rapidly than conarachin and 2S peptides.As it consists of the parts of the storage protein, it was concluded that arachin was more correlative with the formation of seed vigor.