Method for detecting local corrosion of material by electrochemical noise technology, noise probe and manufacturing method of the noise probe

The invention relates to a method for detecting local corrosion of a material by an electrochemical noise technology, a noise probe and a manufacturing method of the noise probe. The noise probe is arranged at a position 1mm away from a material needing to be detected; the material needing to be detected is used as a working electrode; the material needing to be detected and the noise probe are connected to an electrochemical workstation by leads; the noise probe comprises a core column prepared from a material the same as the material needing to be detected, and also comprises a powder paint seal layer which is coated on outer parts of the core column but ends. The method can realize a local corrosion test of a measurable material in a polarization-free natural state, is based on a traditional electrochemical noise test technology and a scanning electrochemical microscope test principle, can detect local corrosion of the material in a natural state, does not introduce any additional signals or polarization, is an electrochemical test method for real-time, on-line, in-situ and lossless reflection of local corrosion of the material, and can guarantee real material test data in a natural corrosion state.