Abstract: Forest carbon sink is one effective and economic way to reduce carbon and release against climate change.Increasing the forest inventory is the important measure for China government to address climate change and to realize carbon summit and carbon neutralization.This paper analyzed the tremendous potential and development space for National Reserve Forest(NRF) in the prespective of reforestation carbon sink, forest management carbon sink and the scale of forestry carbon.And the risk of carbon leakage and countermeasures was discussed, suggestion was proposed to release the carbon sink value of NRF accordingly.