In view of the increasingly serious engineering problems of internal corrosion perforation accidents in high-water-cut crude oil gathering and transportation pipelines, a comprehensive study was carried out on the prediction and monitoring methods of high-risk points of internal corrosion in this type of pipelines. Based on the droplet carrying mechanism of the fluid medium, a method for predicting and judging high-risk points of internal corrosion in this type of pipeline is given; Based on the principle of field signature method corrosion monitoring, The spatial distribution law of the fingerprint coefficient representing the depth of corrosion defects is studied, The corresponding relationship curve with the thickness reduction of the pipeline is given, and the evaluation model of the internal corrosion condition in the high-water-cut crude oil gathering and transportation pipeline is established.It can provide technical support for the scientific management of crude oil gathering and transportation pipelines with high water content and to ensure the safe operation of crude oil gathering and transportation pipelines.