The invention relates to a high-strength bar-planting adhesive for construction. The high-strength bar-planting adhesive is prepared from the following raw materials in part by weight: 80-100 parts ofepoxy resin, 6-8 parts of volcanic ash, 2-4 parts of an active plasticizer, 2-4 parts of a retarder, 6-8 parts of calcium carbonate, 3-5 parts of quartz sand, 2-4 parts of aluminum oxide, 3-5 parts of active diatomite, 1-3 parts of methyl hydroxyl cellulose, 6-8 parts of metakaolin powder, 8-10 parts of heavy calcium powder, 6-8 parts of quartz sand, 5-7 parts of an expanding agent, 60-80 parts of polyvinyl alcohol and 30-40 parts of dibutyl phthalate. The high-strength bar-planting adhesive provided by the invention has the beneficial effects that the processing process is simple, scientificand standard, the formula is reasonable, and the prepared bar-planting adhesive can realize wider and deeper penetration bonding when being used in the construction, is significant in curing effect,strong in adhesive property and obvious in use effect.