To surely supply a lubricant to a shaft sliding member even when a fluid pressure in a valve housing is low, in an electric flow control valve which includes a valve shaft 5 which is moved forward/backward in an axial direction via a feed screw mechanism 4 by normal/reverse rotation of a motor 3 and a valve body 6 which moves in closing direction and opening direction by the forward/backward movement of the valve shaft, and which includes a guide member 7 having the shaft sliding member 71 where the valve shaft is inserted in a slidable manner.

At a guide member 7, a lubricant reservoir 75 which is connected to a shaft sliding member 71 via a communication passage 74 and a lid packing 76 which seals a lubricant in the lubricant reservoir 75 are provided. At a valve body 6, a pressing part 63 is provided which presses the lid packing 76 when the valve body 6 moves in an opening direction exceeding a predetermined valve opening position, and the lubricant is pressed out to the shaft sliding member 71 from the lubricant reservoir 75 by the pressing of the lid packing 76.