We analyse the causes of data error during data transmission, compare several error-controlling codes with each other, and point out error-controlling developing trend. 摘要分析了數據傳輸差錯產生的原因，比較了幾種差錯控制編碼，最后指出了差錯控制未來的研究方向。
The transmission errors and artificial factors lead to the nonstandard contents of telegraphs, which make the difficulties for the computer to process. 由于傳輸差錯及人為因素引起了報文的非標準化，計算機自動處理困難。
