Objective The twophase flow is widely used in industrial production, and the phenomenon of pipe blocking often occurs in pipeline transportation. It affects the efficiency and stability of production. At this time, it is very important to detect the process parameters of twophase flow. To realize the detection of twophase flow parameters without causing damage to the distribution in the measurement area, process tomography (PT) has been developed. As a kind of PT technology, electrical capacitance tomography (ECT) has the advantages of fast imaging speed, simple structure, noninvasive, and