The invention discloses a method for greatly reducing the communication data transmission amount by using a multi-dimension technology. The method can be widely used in the fields, such as wireless communication, network downloading, multimedia data flow distribution, and big data and cloud computing. The method disclosed by the invention comprises the following steps of: S1, loading a data flow to be transmitted; S2, filling the data flow in a data space, so that spatial recombination is completed; S3, counting and dividing repetitive areas; S4, performing repetitive matching searching; S5, compressing independent space modules; S6, performing spatial serialization operation of various independent space modules; S7, generating a spatial data chain; S8, transmitting the data chain and the independent space modules; and S9, performing data reduction. By means of the method disclosed by the invention, the practical transmission number of data can be greatly reduced; the transmission number of ineffective information can also be reduced; and thus, the load pressure in the whole network environment can be reduced.