Given the safety problems caused by the force and vibration during the operation of the medium and high water head sector lock gate，we combine with the sector gate in Longzhouyuan ship lock of the river diversion project from the Yangtze River to the Hanjiang River，study the static characteristics of the sector lock gate by using the finite element analysis software ANSYS，arrange the real-time online monitoring points at the corresponding maximum stress position，and apply real-time online monitoring technology to track and study the whole process of the performance，operation characteristics and health status of the triangular gate equipment. The results show that the real-time online monitoring of the working stress and dynamic characteristics of the main components of the sector gate is an effective means to solve the structural deformation，wear，vibration，defect expansion，and other problems of the gate，which is very important to improve the operation safety of the gate and ensure its normal function.