Abstract: The vibration action,cavitation effect and heat effect of the acoustic field can flake off the grains to plug up the pore space and slit,and then remove the plugging and make the microfractures.The acoustic field can prevent and remove the scale,lower the viscosity of oil,enhance the seepage flow velocity.The heat produced by the electric field can reduce the viscosity.The magnetic field can prevent the wax and scale and increase the injection.Those physical fields play an important role in the oilfield development.