the magnetic field of Yuxuan Acupuncture Apparatus is of special design and development and is national patented linear pulsed magnetic field. When entering into histiocyte of human body, the magnetic field will carry out dynamic combing by changing potential difference so as to generate high potential difference and dynamic effect which will change the speed or direction of the electron movement and lead to qualitative and quantitative change of bioelectricity, then the metabolism of histiocyte can be regulated, blood circulation can be improved, permeability of organizes can be strengthened, and ischemia, hypoxia or edema can be corrected. In addition, the high magnetic field will boost human body to excrete a kind of enzyme that will decompose algogenic substance and play the role of fast acesodyne and edema.