In view of the continuous escalation of global environmental pollution, based on the ship repair and construction industry, the laws and regulations that need to be observed in the green shipbuilding are interpreted, and the energy consumption and emission in each link of the repair and construction technology are sorted out. By investigating several domestic ship repair and construction enterprises, the energy consumption and pollutant emission data in each link of the repair and construction technology are collected. The energy consumption of repair and construction technology is more complicated, and the energy consumption management system of production workshop is not established; the irregularities in pollutant emission are serious, and there are many punishment cases; and the equipment modification and technology optimization can effectively reduce the emission and protect the environment. The domestic ship enterprises need to turn the crisis into the opportunity, and on the basis of energy conservation and emission reduction, to accelerate the transformation and upgrading so as to improve the market competitiveness.