The invention discloses mesogen-jacketed polymer monomers of a norbornene imide system and polymers of the polymer monomers. Mesogen-jacketed liquid crystal polymers (MJLCP) of which the main chains are polynorbornene imide systems have main chain and lateral group functionality, so that the problem that the main chains do not have functionality in the functional process of the MJLCP and new possibility is provided for application of the MJLCP in multiple fields. The MJLCP is obtained by a ring-opening metathesis polymerization method, so the polymerization modes of the MJLCP monomers are expanded, the monomer conversion rate is high, and the relative molecular mass of the polymers is high and is distributed narrowly. The polymers have very good application prospect in the fields of functional materials, photoinduced electron transfer, photonic devices and the like.