Device and method for monitoring integrity of coating structure of offshore wind power pile

The invention relates to an integrity monitoring device and method for a coating structure of an offshore wind power pile. An anti-corrosion coating structure and a monitoring device are arranged on the outer wall of the wind power pile; the coating structure comprises an anti-corrosion paste layer, an anti-corrosion belt layer, a sealing buffer layer and a protective cover which are sequentially coated from inside to outside; the monitoring device comprises a protection cover monitoring module, a humidity monitoring module and a corrosion monitoring module, and sequentially realizes wrapping protection cover damage and impact monitoring, wrapping sealing buffer layer water seepage monitoring and wind power pile surface corrosion monitoring. And fault classification is carried out according to the failure of the protection cover, the sealing buffer layer and the wind power pile, and a corresponding maintenance strategy is formulated. According to the method, a triple monitoring method from inside to outside i