The IPCC Special Report on Climate Change and Land （SRCCL） scientifically assessed climate change mitigation and adaptation，desertification，land degradation，land use and sustainable land management，food security and greenhouse gas fluxes in terrestrial ecosystems，reflecting the latest progress since the Fifth IPCC Assessment Report. Greenhouse gas emissions from the food system，bio-energy，and the estimate of carbon dioxide emissions and removals for the land sector are the most controversial scientific issues in the report. This paper introduces in detail the background and main conclusions of the SRCCL，analyses and evaluates the issues involved，and finally puts forward some suggestions.