Abstract: Transcription factors were a kind of important trans-acting factors to regulate gene transcription in eukaryote. So far, there have been many researches on transcription factors of animal populations, and scientific researchers have predicted transcription factors in the range of whole genome by using biology information technology, furthermore based above data, some special secondary databases were built. Eight transcription factors databases applied in animal population were summarized to provide theoretical basis for exploring molecular mechanism of transcription factors regulating animal genes transcription.