The invention relates to an unpowered current-limiting intelligent intercepting well with a partition board dreg retaining device.The intelligent intercepting well comprises a well body, a sewage inlet pipe, an intercepting sewage pipe and an overflow water outlet pipe are arranged on the side wall of the well body in a communicating mode, and a current limiter is arranged in front of the intercepting sewage pipe.The current limiter comprises a hole, a box chamber, a floating ball and a flashboard, the floating ball and the flashboard are arranged in the box chamber.The hole is communicated with the intercepting sewage pipe, a linkage mechanism is arranged between the floating ball and the flashboard, the floating ball ascends or descends to drive the flashboard to descend or ascend, and the partition board dreg retaining device is arranged in front of the overflow water outlet pipe.The partition board dreg retaining device comprises a baffle, an inclined partition board below the baffle, and an overflow weir opposite to the inclined partition board.The intelligent intercepting well can precisely limit flow.Due to the arrangement of the inclined partition board, the efficient solid interception effect is achieved by preventing the horizontal flowing or a suction effect.A control mechanism is arranged in the box chamber, the risk that current limitation of the floating ball fails is avoided, and the current limiter can adapt to smaller well bodies.