Aimed at particular type of labyrinth regulating valve, its threedimensional (3D) solid model is established with Solid works, through Boolean operations to take internal flow field as the research object. By applied method CFX to simulate internal fluid flow control valve characteristics, the valve flow characteristics of internal flow field visualization results were obtained. According to the simulation results to analyze labyrinth valve flow characteristics of the internal flow field, the curve of ideal flow characteristic under different openings in the spool of the valve and the curve of relationship between pressure and quality under the same opening were obtained. A very important reference has been provided for the followup study of new valves, valves troubleshooting and valve flow field optimization study, and etc.