The present disclosure relates to a plurality of host materials comprising at least one first host compound represented by the following Formula 1 and at least one second host compound represented by the following Formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of host materials according to the present disclosure in the light-emitting layer, an organic electroluminescent device exhibiting low driving voltage and/or high luminous efficiency and/or long lifespan characteristics can be manufactured.