The throttle valve is a PLUG VALVES of the throttle member, the cone can be made into a certain shape or with apertures or slit-like incision of the hollow plunger, having different characteristics of different shapes of the Gate Valves flap, is to the cone valve The lobes example its regulation characteristics analysis. The cone having a varying cross-section, as inserted into the depth of the seat to be attributable to the a part of the effective cross-sectional, so the rest of the effective flow area in accordance with the chosen characteristics follow a certain regularity, is changed with the stroke of the valve stem. Use Solidworks software throttle valve overall modeling and meshing. Plus blocking two ports throttle cover and load analysis of regional grid, meshing with unstructured hybrid grid Gaskets technology, meshing their use of the the COS-MOSFLOWWORKS meshing function, the use of adaptive grid The technical characteristics of the throttle internal flow field simulation. The throttle Internal flow field simulation The internal flow field pressure when the throttle opening height is divided into 20% to 100%, respectively, five times the flow field Fasteners simulation is given a different opening height distribution. Throttle internal flow medium selected as water to follow JB/T5292 relevant standards, to select flow model unidirectional fluid which is incompressible viscous flow, cavitation, end wall set to adiabatic wall, incompressible flow Renault equations with k-