It has a great significance of preventing marine pollution to remain oil from sunken ships when marine perils happen.Based on the existing research results, a program of recovering oil system which can be assisted by ROV (remotely operated vehicle) has been put forward.This device can achieve controlling remotely.The device combines various functions together.It can finish connecting with sunken ships, opening holes, pumping oil and closing value functions under water.Compared with the traditional operation mode, usingthis device can improve work efficiency to a large extent.That provides a new idea for the operation of opening holes and remaining oil from shipwrecks.In this paper, a detailed description of its structure design has been carried out.