As products of network’s communicating and blending, the personalized network signature, especially those which blend in Japanese hiragana have shown strong law of sociolinguistics. Further study shows that Japanese hiragana will blend with other elements in network signature and then produce result in vibrations of pronunciation，semantic and grammar. When it comes to sociolinguistic theories, different Japanese hiragana may convey different massage, thus it may cause different degree of cognitive reaction. In a word, the network signature which includes Japanese hiragana may be a good response to network culture’s blending and variation situation. And this will contribute to the study of physical cognitive system which lies behind personalized network signature.