Marine pollution has become a global environmental problem, and the negative impact of marine garbage on marine life and human beings cannot be ignored, especially the pollution of plastic products. However, there are still many problems in the recycling and treatment of ocean plastic waste. In order to solve these problems, this project designed an intelligent unmanned offshore plastic waste efficient recovery and cracking oil refining platform. An innovative design was carried out to address the disadvantages of plastic waste at sea, such as great harm, existing fishing devices that cannot be handled on site (waste caught at sea needs to be transported to land for treatment), high recovery cost, low collection efficiency, limited application scenarios, and inability to be used in real offshore "garbage islands" and garbage patches.