With the development of science and technology,the electric connectors operating in the field and at sea required waterproof and anti-bad environment. In the connector industry,high environment-resistant connector has been the focus of the study.There has been a defect in the performance of anti-aslt spray and waterproof,and high pressure-resistent.Traditional connector can withstand the kilovolt voltage. To this respecter,designed a waterproof, anti-salt spray cycloidal connector,the number of contacts for the 24cores,and can withstand voltage of more than 10,000 volts.Structure of the connector was designed in accordance with the the requirements of saling.The plating process and material was improved, so that the connector shell a higher-grade anti-salt spray.The performance has been able to meet the current requirements of China's industrial.The connector can be used in manufacture and practice.