The invention belongs to the field of paint, and discloses anticorrosive paint adopting nano-materials and used for a power cable. The paint is prepared by steps that as follows: acrylic acid, N-methyl pyrrolidone, vinyl trimethoxy silane, lauryl polyoxyethylene ether, acetone and phthalate are added sequentially into a reactor, stirring is performed for 3 minutes at the speed of 1,000 revolutions/min, and a material A is obtained; borax, white graphite and Li-bentonite are sent to a ball mill and ground to powder with a particle size larger than 500 meshes, and a material B is obtained; nano-silica gel and nano-titanium dioxide are mixed uniformly according to the weight ratio of 1:1, and a material C is obtained; and the material A, the material B and the material C are uniformly stirred, sealed and packaged to obtain the paint. The anticorrosive paint can effectively prevent corrosion of acid, alkali and salt as well as high temperature.