Abstract: Seismic tomography is a common geophysical tool to explore three-dimensional deep seismic velocity structure of the Earth.Such deep structures are important information to better understand the Earth.Also, because most surface crustal processes are controlled by deep geodynamic processes, deep Earth structures become more and more favored by many geologists.But because there are currently a lot of seismic tomographic methods and their resulted structures and resolution are different, it is inconvenient for non-seismological researchers to use the tomographic results.To realize a better interdisciplinary combination of geophysics, geochemistry and geology etc., the present study made a comprehensive analysis on possible uncertainties existed in seismic tomographic results.Meanwhile, we gave correspondent suggestions to ensure that geoscientists could envisage the uncertainties and made reasonable use of the tomographic results.