非接触式电阻抗层析成像（non-contact electrical impedance tomography，NEIT）作为一种新型测试计量技术，具有无辐射、非接触和响应速度快的优点。传统电学层析成像（electrical tomography，ET）技术的图像重构部分通常在Matlab软件平台上进行离线成像，不利于工业现场的实时监测。针对上述问题，设计了一款基于LabVIEW的电阻抗层析成像系统，该系统可以实现数据的在线采集及实时成像。通过电阻抗测量系统提取阻抗信息的实部、虚部和相位分量，并结合LabVIEW编译的图像重构算法，分别对3种分量信息进行成像。为了提高重构精度，进一步利用主成分分析融合算法，对实部、虚部及相位成像结果进行图像融合。通过所搭建的两相流测试平台的验证，该系统可以有效用于不同介质分布下的两相流层析成像。 Non-contact electrical impedance tomography (NEIT), as a new type of test and measurement technology, has the advantages of no radiation, non-contact and fast response. The image reconstruction part of traditional electrical tomography technology is usually performed off-line imaging on the MATLAB software platform, which is not conducive to real-time monitoring in industrial sites. Aiming at the above problems, this paper will design a LabVIEW-based electrical impedance tomography system, which can realize online data acquisition and real-time imaging. 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