The invention belongs to the field of functional materials and provides a conductive concrete material and a preparation method thereof. The material is a novel concrete material based on a graphdiynenanomaterial and comprises the following raw materials: 200-800 parts of Portland cement, 500-1600 parts of standard sand, 10-25 parts of a dispersing agent, 3-8 parts of the graphdiyne nanomaterialand 250-350 parts of mixing water. The method comprises the following steps: firstly, polyoxyethylene nonylphenylether as the dispersing agent and the graphdiyne nanomaterial are dissolved in the mixing water, ultrasonic processing is performed, and a waterborne dispersed suspension which is uniformly dispersed is prepared; secondly, the waterborne dispersed suspension is added to the Portland cement for stirring, stirred graphdiyne cement paste is poured into a mold and is vibrated and compacted to be molded; finally, a sample is subjected to standard curing, and demolding is performed. The prepared concrete material has excellent conductivity and higher strength, electrical resistivity of the concrete material is reduced obviously, and practical engineering application of novel conductive concrete is facilitated.