The invention discloses a heat-vulcanization adhesive for adhering ceramics with elastomer. The heat-vulcanization adhesive comprises the following components in percentage by weight: 5-15% of phenolic resin, 5-15% of a film-forming agent, 0.5-5% of an extra formaldehyde source, 0.5-5% of an acid acceptor, 5-10% of an adhesion promoter and the balance solvent. The heat-vulcanization adhesive is characterized in that a phenolic compound supported by a silicane-containing modified organic porous material is used as the adhesion promoter, so that the adhesive forms a high-strength high-activity active transition layer between the elastomer and hard ceramics, and therefore, adhesion of the high-strength hard ceramics by the adhesive is effectively realized.