Solid material online analysis device capable of switching light paths

The utility model discloses a solid material online analysis device capable of switching light paths. The solid material online analysis device comprises an LIBS (Laser-induced Breakdown Spectroscopy) system, a switching module, a measuring chamber and a signal collecting module, laser emitted by a laser of the LIBS system is in contact with an object in the measuring chamber through a dichroscope in the switching module, and after plasma is generated, the plasma is collected by the signal collecting module; the measuring chamber comprises a particle flow measuring chamber and a tablet measuring chamber; and the switching module is positioned between the LIBS system and the measuring chamber and is used for switching a light path formed by laser of the LIBS system between the particle flow measuring chamber and the tablet measuring chamber, so that the detection of the particle flow and the detection of the sample tablet are realized. The device is provided with the switching module for switching the light pa