This book describes the principles of integrated assessment models (IAM) for climate change economics and introduces various computable models for different development mechanisms under climate change governance. The authors present several new models they have constructed based on the RICE framework, specifically the MRICES((multi-factor RICE)) and EMRICES models, which incorporate global economic interactions into the RICE framework, and the CINCIA model, which describes technological advances and industrial structure evolution, introducing the mechanism of evolutionary economics. The models discussed in the book help governments and policy-makers tackle climate change and take positive measures on climate governance as well as promote economic and social development to narrow the gaps between countries.