The invention relates to a kind of hydraulic feedback oil-well pump with a long round plug and passageways for oil-entering and sand-depositing, strong guard against dense and, includes sealing total five and double passageways structure of oil-entering and sand-deposition. The trait of the pump is fixing a long plug sealing system between shaft-plug and tube, and fixing a passageway structure of oil-entering and sand-depositing between pump tube and tube outside. This equipment is used to enhance the usefulness of the pump, enhance the function avoiding dense and sand, prolong the using life. The invention has reasonable design, simple structure, easy-making, and convenient-using, efficient and good sealing function; entering passage is separated from depositing passageway, not gather in the tube as the routine pump do, the oil tube pole avoids buried by sand, Even if under the condition that oil is buried in sand, the pump can also produce with sand. The life span of this pump is three to five times more than the routine one.