The invention relates to an underwater non-dispersed concrete, which comprises following components in percentage by weight: 15 to 25% of gelling material, 27 to 31% of sand, 40 to 46.5% of stone, 0.3to 0.7% of water reducer, 0.3 to 0.7% of flocculant, and 7.5 to 9.5% of water. The anti-dispersion performance of provided concrete is obviously enhanced, under the assistance of a corresponding underwater pouring and construction technology, the concrete pouring speed can be controlled, the amount of corrosive mediums that enter the concrete during the concrete pouring process is obviously reduced, the concrete compactness is increased, and the durability of filling piles is strengthened.