The Phyllostachys praecox (Lei bamboo) is new bamboo specie that has been spread widely in south China in recent years. This paper aimed at quantifying the efficiency and dynamics of carbon storage in the Phyllostachys praecox vege-tation with bamboo fields of 6 different ages. The results showed that bamboo density and average diameter at breast height were increased with planting age within 6 years. Once the forest age exceeded 6 years, the forest density declined and the average diameter at breast height increased slowly. The average carbon content rate for different bamboo organs are sorted as Stems (423 g/kg) > Branch (412 g/kg) > Leaf (385 g/kg) > Roots (363 g/kg). The vegetations upon ground (stems, branch and leaf) accounted for more than 70% of the total carbon storage. Among them the bamboo stems contributed the largest proportion and the carbon storage increased most quickly with planting age. The total vegetation carbon storage increased quickly during 3–6 years, then the increase rate slowed down, and finally the vegetation carbon storage reached the maximum in 10 years, and then maintained stable.