A conductive particle, manufacturing method thereof, conductive adhesive comprising the conductive particle, and manufacturing method thereof. The conductive particle comprises: a core microsphere (10); a conductive polymer layer (12) coating the core microsphere (10); and a 3D graphene layer (14) coating the conductive polymer layer (12) and a metal layer (16). The conductive adhesive comprises the conductive particle. The conductive particle and the conductive adhesive of the present invention can improve compressive strength and ensure conductivity at the same time.