The utility model relates to a three-phase discharging device of an extraction and clarification chamber, which comprises the extraction and clarification chamber containing a water phase layer, a three-phase layer and an organic phase layer from bottom to top, and further comprises a discharging system, a transverse adjusting system and a longitudinal adjusting system, the discharge system is composed of a Z-shaped hard pipe, a valve and a hose, and contents in the extraction clarification chamber can be discharged by opening the valve; the transverse adjusting system is composed of a pulleyI, a traction rope I and a carrier roller, and the hose can be transversely displaced by pulling the traction rope I; the longitudinal adjusting system consists of a pulley II and a traction rope II;the device has the advantages that electric devices such as a ship pump do not need to be used, major potential safety hazards of electric sparks are thoroughly eliminated, operation is easy, three phases are thoroughly discharged, the production efficiency is high, the device is simple, equipment investment is small, and the production cost is low, and the device is suitable for being applied tothe hydrometallurgy industry.