The invention belongs to the field of fluid tomographic imaging technology, and relates to an electromagnetic sensing imaging system based on a screen mesh. The system is used for measuring two-phase fluid having at least one electric conduction phase or magnetic conduction phase, and comprises a screen mesh inductance imaging sensor arranged vertically to the axial direction of a pipeline, an excitation signal generation unit, a signal measurement unit, a simulation gating switch and an upper imaging computer. The screen mesh sensor consists of a first group of insulated conductors and a second group of insulated conductors which are vertical to each other and close to each other along the axial direction, and the insulated conductors in every group are parallel to each other. The invention also provides an imaging method realized by the system. The imaging system and method can be used for obtaining the space distribution of electric conduction or magnetic conduction fluid and powder without using complicated reconstruction algorithm.