The port operation environment is complex, and the crane drum cable is subjected to multiple tests such as frequent retraction, high strength, and harsh weather for a long time. Common faults include outer sheath cracking, core wire breakage, and insulation breakdown. When selecting, it is recommended to pay attention to the following points: firstly, choose wear-resistant and tear resistant polyurethane PUR sheath material; The second is to use anti twist weaving structure to prevent the core wire from winding; Thirdly, select the appropriate insulation level based on the actual working voltage. In addition, regular inspection of cable surface wear and timely replacement can effectively avoid sudden shutdown accidents.