Deep sea microscopic Raman imaging system and method

The invention relates to a microscopic Raman imaging system, in particular to a deep sea microscopic Raman imaging system and a deep sea microscopic Raman imaging method, and solves the problems that when an existing microscopic Raman imaging system is used for detecting particles in deep sea, high-resolution and large-view-field optical images and accurate Raman signals cannot be obtained at the same time, the working distance of a microscope set is increased, and the working efficiency is low. The system provided by the invention comprises a microscopic module consisting of a low-power objective lens and a high-power objective lens which can be switched through an XY linear translation stage, and a dichroscope arranged between the microscopic module and a microscopic imaging module, a microscopic imaging module composed of an imaging transfer mirror and a first camera which are sequentially arranged on a transmission light path of the dichroscope, a beam expander and a beam splitter are sequentially arrange