Extremely low frequency magnetic field(ELF-MF) is a kind of ubiquitous physical environment factor. With the development of science and society, organisms, such as human, mammals and fish, are continuously exposure to ELF-MF. Nowadays, more and more attention has been paid to the biological effects of ELF-MF exposure. On the basis of the present literatures into the biological effects of ELF-MF, we summarized the research results with a focus on animal behavior, immunologic function, cell development, and e...