The data transmission method using code method includes the following steps: The frequent terms are classified and encoded, code is made of symbol and/or figure, codes are respectively corresponding to terms, sentences and company names, the codes and correspondent terms and sentences are made into standardized computer optical disk, the computer optical disk is input into the terminal computer of the data transmission system, addresser uses the terminal computer and type inputs the correspondence contents according to the conventional mode, according to the contents of optical disk, the computer can standardize them and change them into codes, and transfer the encoded correspondence contents to its addressee, then those codes can be automatically changed into the correspondence contents by the computer of addressee. |