A magnetic particle controller relates to function device making use of magnetic force to control magnetic ball, cell biological molecule and other particles, comprising plate micro coil integrated on front and reverse sides of one substrate, magnetic micro magnetic core and magnetic tip. When electric current passing through the plate micro coil, electromagnetic field is created near it and magnetic particles near the magnetic micro tip will be absorbed onto it, when the electricity is cur off, the particles will be released since the magnetic field force has disappeared. The method of making plate micro coil only relates to a modeling of photoresist and a copper electroplating course , the process is simple and convenient. Including magnetic ball, cell biological molecule and other particles as objections , the invention can be used alone and also as a part to integrate a micro complete analysis system., with the functions of controlling a single particle, counting a single particle values, screening or separating particle mixture, it can be applied in the fields such as cell biology, immunology analysis, micro fluid research and millimicron technology.