An omnidirectional vector seismic data processing method, the method comprising: collecting omnidirectional vector seismic data of an omnidirectional vector geophone, and performing a pre-processing operation on the omnidirectional vector seismic data; wherein the omnidirectional vector geophone comprises: eight wave detectors and support structures thereof, the support structures are used for supporting the eight wave detectors such that bottom surfaces of each two wave detectors are on one of regular triangular surfaces of a regular tetrahedron, crossing points of symmetry axes of the two wave detectors that are on the same regular triangular surface that cross with the regular triangular surface are both on an angular bisector of an angle of the regular triangular surface and are symmetric with respect to a center of the regular triangular surface; performing pressure and shear waves separation operation on the omnidirectional vector seismic data after the data is subject to the pre-processing operation, to obtain pressure wave data and shear wave data; performing space vector calculation and wave field recovery operation on the pressure wave data and the shear wave data, characterised in that the wave field recovery operation includes a statics correction and a deconvolution operation; further characterised by performing an imaging operation based on the pressure wave data and the shear wave that are subject to the wave field recovery operation, to obtain pressure wave imaging data and shear wave imaging data; and by performing modeling based on the pressure wave data and the shear wave data that are subject to the wave field recovery operation and the pressure wave imaging data and the shear wave imaging data, to obtain a pressure wave velocity model and a shear wave velocity model; and in that the wave detectors are flat sheet capacitor wave detectors; two wave detectors are arranged side-by-side on the bisector and at a distance from the corners on the triangular surface; the symmetry axis of each wave detector being the central symmetry axis and being orthogonal to the triangular surface of the tetrahedron; wherein collecting omnidirectional vector seismic data comprises receiving data from each wave detector of the omnidirectional vector geophone. collecting omnidirectional vector seismic data of an omnidirectional vector geophone, and performing a pre-processing operation on the omnidirectional vector seismic data; wherein the omnidirectional vector geophone comprises: eight wave detectors and support structures thereof, the support structures are used for supporting the eight wave detectors such that bottom surfaces of each two wave detectors are on one of regular triangular surfaces of a regular tetrahedron, crossing points of symmetry axes of the two wave detectors that are on the same regular triangular surface that cross with the regular triangular surface are both on an angular bisector of an angle of the regular triangular surface and are symmetric with respect to a center of the regular triangular surface; performing pressure and shear waves separation operation on the omnidirectional vector seismic data after the data is subject to the pre-processing operation, to obtain pressure wave data and shear wave data; performing space vector calculation and wave field recovery operation on the pressure wave data and the shear wave data, characterised in that the wave field recovery operation includes a statics correction and a deconvolution operation; further characterised by performing an imaging operation based on the pressure wave data and the shear wave that are subject to the wave field recovery operation, to obtain pressure wave imaging data and shear wave imaging data; and by performing modeling based on the pressure wave data and the shear wave data that are subject to the wave field recovery operation and the pressure wave imaging data and the shear wave imaging data, to obtain a pressure wave velocity model and a shear wave velocity model; and in that the wave detectors are flat sheet capacitor wave detectors; two wave detectors are arranged side-by-side on the bisector and at a distance from the corners on the triangular surface; the symmetry axis of each wave detector being the central symmetry axis and being orthogonal to the triangular surface of the tetrahedron; wherein collecting omnidirectional vector seismic data comprises receiving data from each wave detector of the omnidirectional vector geophone.