Automatic monitoring technical method for marine structures with underwater wireless transmission system

The invention relates to an automatic monitoring technical method for marine structures with an underwater wireless transmission system. In the method, the monitoring information of an underwater automatic acquisition instrument of the marine structures is transmitted onto water by means of wireless transmission between an underwater unit and an overwater unit; and underwater acoustic send-receive combined transducers of the underwater unit and the overwater unit separately form unit bodies and then the unit bodies are placed in water, wherein the underwater acoustic send-receive combined transducer of the underwater unit is arranged on a fixing device at 2-3m away from the bottom of a sea, and the underwater acoustic send-receive combined transducer of the overwater unit is placed below a water surface. In long-distance shoreline underwater continuous monitoring process, timing data or real-time data acquisition and transmission can be carried out, thus reducing the interference of severe weather and construction. The method has the advantages of fast and convenient transmission, safety, reliability, high accuracy of data acquisition and transmission, strong long-term stability of data acquisition and transmission, and error rate within 10-3-10-4.