Abstract: The magnetic particle according to the outside layer material wrap up,can produce the selectivity with cell to stick to attach,this characteristic can be used for the cell separation,choose separately,the medicine conveyance etc.The electric order of different wires is changed to form a moving micro electromagnetic field,and then the particle movement can be manipulated,and also the cell movement can be manipulated.When the cell reaches the destination,use the tool to manipulate the cell and research the characteristic of the cell.And discussing the MEMS technique of wire array,simulate the magnetic field and temperature field,and know the influence factors on electromagnetic force.