The present invention provides an apparatus and method to increase blood microcirculation in tissue, using the pairs of Helmholtz coils with different frequencies； shape and amplitude of the magnetic field were built covering this tissue. A Giant Magnetoresistance Sensor or Laser Doppler flow meter sensor is used to determine a feedback from the tissue where the magnetic field is applied. The method includes calibration of the sensors and a special time protocol for the magnetic field to identify the maximum field effect for increasing blood microcirculation. This device includes the Helmholtz coils to apply the alternating magnetic field, a giant magnetoresistance sensor to measure feedback after applying the alternating magnetic field, a power amplifier for the Helmholtz coils and the giant magnetoresistance sensor, a data acquisition box, a virtual function generator and a virtual oscilloscope all of which are connected to communicate with a computer.
