Single-cabin-ball three-component submarine magnetometer

The invention discloses a single-cabin-ball three-component submarine magnetometer which comprises an unhooking mechanism, an instrument cabin and a base. An integrated packaging mode is adopted in the instrument cabin, and a three-component magnetic sensor, an orientation sensor, an attitude sensor and a data sensor are installed in the instrument cabin. The single-cabin-ball three-component submarine magnetometer is used for submarine magnetic field observation, oil-gas exploration and geological survey. A submarine magnetic field measurement function of the single-cabin-ball three-component submarine magnetometer is concentrated in a single cabin ball, and the problems that an existing submarine magnetic force detection device is complex and low in direction positioning precision and has inconvenience in placing and recycling operation and the like are solved.