The invention discloses a uniform-distributed sand-proof device used in oil production, which is characterized in that: it is mainly formed by the central cyclone and a group of outer cyclones uniformly distributed around the central one; wherein, the top of outer cyclone is connected to the cyclone chamber of central cyclone; the lower end of central cyclone case has a inner sand outlet; the outer cyclone case has a outer sand outlet; it top via the screw is connected to the case interface; the center and outer cyclones are formed by cyclone case and cyclone pipe; the cyclone leak-off pipe has fins and bottom leak-off holes and the wall of central cyclone has tangential liquid inlet. The invention has simple structure, safe and reliable usage while it can avoid the jam. |