Micro electric valve for downhole hydraulic control

The invention discloses a micro electric valve for downhole hydraulic control. The micro electric valve for downhole hydraulic control comprises a valve body and a valve rod, one end of the valve rod is connected with a power input device, a plurality of sealing pieces are arranged between the valve rod and the inner wall of the valve hole along the axial direction at interval for dividing the space between the valve rod and valve body into a plurality of annular spaces, at least two radial holes are opened at one side of the valve body along the axial direction at interval, each radial hole is connected with one corresponding annular space, at least one annular concave part is arranged at axial direction of the valve rod, the annular concave part is used for connecting two adjacent annular spaces. The micro electric valve for downhole hydraulic control is simple in structure, small in volume and high in pressure resistance for the downhole ultra high pressure and small work environment; the direction control of the switch sliding sleeve can be achieved at the subsection construction time of the oil gas well, the downhole liquid pressure is used as the reversing power for overcoming the impact of the downhole high pressure and small space, and the subsection measure working time is greatly shortened.