The model of both liquid film thickness and wall shear stress was established;and making use of LabVIEW-based double-pulse current method,the annular flow wall’s liquid film thickness of the gas-liquid flow was calculated,including the wall shear stress values;and the longitudinal conductance sensor was de-signed and optimized and the annular electrode was adopted to obtain current incentive and voltage signal.Da-ta collection of the system and conversion formula can be implemented based on the LabVIEW platform and through combining with Matlab.%建立了液膜厚度与壁面剪切力的模型，通过双脉冲电流法测量出气-液两相流环状流的壁面液膜厚度，进而计算出壁面剪切力值。优化设计了电导式纵向四电极传感器，采用环形电极进行电流激励与电压信号获取。整套系统的数据采集、公式换算都以 LabVIEW为平台并结合 Matlab完成。
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