Abstract: Autonomous ocean vehicles, which consist of autonomous underwater vehicle and autonomous surface vehicle, are intelligent unmanned platforms that can carry out various missions in sophisticated ocean environment. Several schemes for several key technology problems are proposed based on experience and practice of related technology problems. The key techniques about system architecture, motion control, intelligent planning and decision making and system simulation are discussed in respect of autonomous underwater vehicles, while speed performance and intelligence problems are discussed in respect of autonomous surface vehicles. The technology of autonomous ocean vehicles in our country has made great headway, but it still has a long way to go before reaching maturity.