The method of ensuring the network security was usually based on the stream cipher algorithms to encrypt the information. One way of testing the quality of a stream cipher algorithm was used NIST standard for testing. For the shortcoming of those detection methods that measure a segment of key streams, the results were not on systematic approaches. To improve these methods, a systematic measurement and visual scheme on key streams is hereby proposed,
which utilizes the testing results in a more accurate manner. By transforming the data into 2D visualization maps, the results are more visible to show the random characteristics of the ZUC.