The fully automatic online core analysis system is mainly used for research on various rock cores, sediment column samples, etc. Realize rapid non-destructive testing of rock cores, measuring optical linear imaging, color spectroscopy, magnetic susceptibility, XRF chemical element detection, resistivity measurement system, P-wave velocity measurement subsystem, gamma density measurement subsystem, etc. By obtaining high-resolution sedimentary records and chemical parameters of core samples, high-resolution climate and environmental information can be obtained, which is of great significance for paleoceanography, paleoclimatology, and sedimentology research. This enables the identification of orbital, sub orbital, and even decades or smaller scale climate changes.