In order to solve the problem that deep-sea unmanned mobile platforms lack combined vector hydrophones which match their working depth, a large depth combined co-vibrating vector hydrophone was designed and developed with the thin aluminum alloy spherical shell as its vector channel and the piezoelectric ceramic ring as its sound pressure channel. The acoustic performance and pressure resistance of the hydrophone was verified by theoretical calculation, finite element simulation and experimental test. The size of the hydrophone is Φ85 mm, with the mass being 398 g, and the average density being 1 240 kg/m³. Its working frequency range is from 20 to 3 000 Hz. The vector channel of the hydrophone is cosine directional, and its sensitivity is -187 dB@ 500 Hz. The sound pressure channel has non-direction, with the sensitivity being -191 dB @ 500 Hz. This vector hydrophone has a working depth of 2 000 m. Sea tests show that this hydrophone can be applied on deep-sea unmanned platforms, such as underwater gliders, and can carry out acoustic detection missions,which means that it has great application values in the field of deep-sea acoustic detection.