Abstract: CO₂ capture and storage from NGCC plant is the inevitable path towards net-zero emission. A modeling and comparison study of CO₂ capture in a NGCC plant by amine-scrubbing, calcium looping and via Aspen Plus is presented. First, the natural gas combined cycle plant （NGCC） was modeled and validated against existing plants. Subsequent modeling and analysis were conducted on CO₂ capture for the NGCC plant using both calcium looping and amine-scrubbing. The amine-scrubbing considered a typical MEA/MDEA （monoethanolamine/methyldiethanolamine） blended solution as the absorbent. For the calcium looping process, the carbonator was considered operating at 580 ℃, with a theoretical CO₂ capture rate of over 90%. The high-temperature flue gas in the calcium looping process allowed the steam cycle of the NGCC to be reasonably elevated to 16.8 MPa/610 ℃/630 ℃. When the amine-scrubbing is used for CO₂ capture, the net efficiency loss of electricity generation of the NGCC is 7.3%, while it is 4.9% with calcium looping CO₂ capture. By considering heat recovery through a granular heat exchanger, the net efficiency loss could be further reduced to 3.4%. It is demonstrated that calcium looping is a reasonable option for CO₂ capture in NGCC plants.