The principles and ideas on aircraft black box were used to design a data recorder on industrial control. According to the experimental data recorded by the instrument, we can improve the design of equipment. Firstly, the design ideas of the data recorder were introduced, then the several modules of the system were designed. In order to improve the storage reliability of data recorder, the skill of redundance was given. Then the buffer memory and the ping-pong memory mode were used to solve the problem of inconsistent rates of the transfer data and store data. Finally, it was proved that the system could meet the application requirements under the test of the program.