Traditional networked test network test technology in low precision, not all the data for testing, testing data attributes are not clear, therefore, based on the RS485 serial connection diagram and storage structure of networked test technology research. The information fusion algorithm based on information fusion is used to obtain the error square matrix of the test and improve the accuracy of the traditional technology. The whole data is tested by using the definition model and the dynamic model limited memory processing technology to access the entire storage memory. Using the distributed computing technique, the quality of data in storage is measured by binary system algorithm to determine the attribute of data. Conclusion through the experiment, this paper test technology can not only determine data attributes, it can improve networked test precision, and testing data, for our country network testing technology laid a solid foundation in the future.