In this study, the sequestration and storage capacity of carbon were quantified in canopy trees of Sundarbans - Sundari, Gewa, Baen, Keora, Golpata and Tiger fern- represent the largest part of the whole forest. Different parts of the trees such as branch, leaf, skin and wood were collected to measure carbon in the study area. They have also been selected according to their DBH≥ 10cm. The capacity of sequestration of C fluctuates in different components of a single species. C capture in Gewa, branches having diameter less than 5 cm, was 41.48% and for Sundari it was 41.3 %.