Single cabin ball three-component seafloor magnetometer

The utility model discloses a single cabin ball three-component seafloor magnetometer which comprises a tripping mechanism (1), an instrument cabin (2) and a base (6). An internal part of the instrument cabin (2) is fixed with a glass cabin ball, the tripping mechanism (1) is positioned at a top end of the instrument cabin (2), and the base (6) is positioned at a bottom end of the instrument cabin (2). The tripping mechanism (1) and the base (6) are fixedly connected through a tension steel wire, and the instrument cabin (2) is fixed in the base (6). The single cabin ball three-component seafloor magnetometer is used for seafloor magnetic field observation, oil and gas exploration and geological survey. Seafloor magnetic field measuring functions of the single cabin ball three-component seafloor magnetometer are integrated in one cabin ball, and problems of complex system, low direction positioning accuracy and inconvenient release and withdrawing of an existing seafloor magnetic detection device are solved.