In order to resolve the problem of serious energy waste of marine diesel engine platform and achieve energy conservation and emission reduction, we develop the jacket water waste heat utilization energy-saving technology for diesel engine cylinder liner and a new type of marine diesel exhaust heat insulation technology of fresh water. By these new technologies, we can maximize the utilization rate of diesel engine waste heat of offshore platform and reduce emission, achieving energy saving and environment protection. In the 21st century, the age of ocean, energy has become an important issue in the development of economy, so the proposed energy-saving technologies for the development of offshore platform are significant.