Based on the development of economy in Yangtze River Delta, the paper analyzes the status quo of energy and environment in the area. Using the energy conservation and emission reduction dynamic evolution model and applying scenario analysis method, it forecasts the economic output, energy consumption and pollution emission of Yangtze River Delta in 2015 and then analyzes the evolution of economic output, energy consumption and pollution emission from 2009 to 2015. The paper provides theory basis for Yangtze River Delta to realize the strategy of energy saving and emission reduction and achieve sustainable development of economy, energy and environment in the future.