IOP is a publisher of 45 journals totally, and it covers all fields of mathematics, physics and chemistry. The scope of disciplines include not only theoretical and applied physics, for instance, some interdisciplinaries such as biophysics, medical physics, but also journals of many associations, for example, Chinese Physical Association, European Physical Association, German Physical Association, European Optics Association, International Metrology Bureau, London Math Association, International Nuclear Institution, the Royal Swedish Academy of Sciences, Radioactive Protection Association, Chinese Society of Medical Physics, Chinese Academy of Sciences & Chinese Academy of Mechanics, International School for Advanced Studies of Italian, Nanjing Institute of Geophysical Prospecting for Petroleum.