High-definition real-time imaging device, imaging system and imaging method based on FFL

The invention discloses FFL-based high-definition real-time imaging equipment, an imaging system and an imaging method, and solves the problems that other operations cannot be performed on a sample during imaging, the imaging area is limited, large sample scanning is difficult to realize, and three-dimensional tomography is low in resolution, low in scanning speed and poor in practicability in the prior art. Comprising a non-magnetic-field line scanning coil assembly I and a non-magnetic-field line scanning coil assembly II which are arranged on a base and can form movable non-magnetic-field lines, and an open non-magnetic-field line scanning area is arranged between the non-magnetic-field line scanning coil assembly I and the non-magnetic-field line scanning coil assembly II; the device further comprises an excitation winding coil and a detection winding coil. A magnetic field coverage area of the excitation winding coil and a detection area of the detection winding coil both correspond to the non-magnetic f