The invention provides a high-performance concrete with ultrahigh strength and a preparation method thereof. The high-performance concrete comprises 500 to 800 parts of Portland cement, 200 to 300 parts of silica fume, 200 to 300 parts of ultrafine fly ash, 150 to 300 parts of water, 10 to 30 parts of a polycarboxylate superplasticizer, 1000 to 1500 parts of fine river sand, 150 to 250 parts of ultrafine copper-plated steel fibers, 20 to 100 parts of microcapsules and 15 to 60 parts of a curing agent 830.