After the drilling mud filtered through whole set of solids control machineries, the treating mud is storage in reserve tank and pump back to the well for drilling bit lubrication. However, the treated mud will effect by gravity and created setting solid on bottom of the tank and the mud parameters is off the balance. To prevent this matter, consist agitated to the mud is need and mud agitator is serve for this continues mixing purpose. Mud Agitator chooses method is by the size of the mud tank to determine how big the motor will need for use. The height of the tank also determines the mud agitator will need either one or two impeller. It is simple, compact motor with impeller and motor from 3kw to 22kw and impeller size is from 650mm to 1100mm depends on the mud tank size, the torque created from motor created consists mixing cycle for great merit. To keep both the mud mixing evenly and the suspension of solids, the mud agitator is used to agitate the mud continuity and reliably. This agitator agitates the mud to make debris; silt and sand pass the solids control system without being sinking toward the tank bottom. Due to the simplex turbine decelerator, this product is featured by small size, light weight, evened transmission, minimum noise, high efficiency of transmission and strong mixing power. The electric motor use in agitator is explosion by requirement of the drilling field and reducer input shaft are connected through elastic shaft coupling instead of belt transmission, and therefore rotation speed of the wave wheel is constant, the maxing intensity is large and the range is wide, which has structurally avoided the phenomenon of engine’s overload at startup, suitable for wild field operation under poor conditions, and it is convenient to be installed, operate or replaced if needed.