The pump gate is a new type of water environment management equipment with compact device and novel structure. However， as this equipment is a combination of hydraulic plate and axial-flow pump， the weak boundary constraint and complex flow are easy to induce the vibration of the pump gate. Therefore it is necessary to carry out systematic research on the hydraulics and power safety of the pump gate before widespread application. In this study， the hydrostatic properties， hydrodynamic and flow-excited vibration characteristics of the vertical pump gate are studied systematically. It is conducted when the equipment under different operating conditions. The research methodology includes numerical simulation， hydrodynamic and hydroelastic vibration experiments. As a result， the problem of large vibration is revealed when the pump gate is operating. The Hilbert-Huang transformation method is used to analyze the data. On the basis of this， the modified and optimized design of the pump gate is carried out. The achievement indicates that the connection between components should be enhanced. After a great deal of effort， the final optimization scheme effectively controls the structural vibration and the optimization effect is significant， which provided a great reference for the design of similar projects.