In the past 20 years, Underwater Vehicle technology has been developed rapidly. Various kind of novel underwater vehicle has been coming forth continuously. This paper introduces a novel type of hybrid underwater vehicle - Autonomous & Remotely Operated Vehicle. ARV features with different operation modes(autonomous, semi-autonomous, and remote control). It’s equipped with power supplies and a fiber optic micro cable. AUV mode enables the vehicle to make underwater exploration in a large scale, while ROV mode is de-signed to investigate in limited area with accuracy. The paper also introduces domestic and foreign research situation, and successful application cases of ARV.