FoxP2 is found that the first gene related to the language, the gene is one of the selective markers in the process of human evolution, and language are closely related, since it was found that more than 20 years, have been the focus of scientific research personnel.It in many other animals with complex voice and vocal learning ability, songbirds, for example, it is also found.Because singing study and language learning are similar, so many researchers to study study birds chirp and obtain the FoxP2 gene expression mechanism.This article is based on the research status of FoxP2, by immune FoxP2 chemistry experimental research study in birds chirp expression quantity differences in different periods in the brain.Research results show that the FoxP2 gene in striatum expression of birds, especially the X area, and study in singing and express the amount of sensitive period was obviously higher than that of the expression of the sensitive period.Phase noise sensitive bird chirp learning FoxP2 expressed in striatum of the average density of 17.293 + / - 1.769, rather than the sensitive period FoxP2 expressed in striatum of the average density of 11.995 + / - 1.243.