The utility model discloses a device capable of effectively reducing impurity carried in the loading organic phase in biometallurgical technology. A thin layer washing platform (5) is equipped in a container (7), at least one spraying pipe (4) for clean washing water is equipped corresponding to the thin layer washing platform (5), a loading organic phase inlet and buffer zone (6) is provided in the container (7), an agglomeration filtering interlayer (10) is connected with the other side of the thin layer washing platform (5), the upper layer of the aggregate filtering interlayer is hydrophobic filling material (2), the lower layer is hydrophilic filling material (9), and a loading organic phase outlet (1) corresponding to the upper part of the agglomeration filtering interlayer (10) and a washing water outlet (11) corresponding to the bottom of the agglomeration filtering interlayer (10) are provided in the container (7). The utility model can reduce the impurity carried in the loading organic phase, integrates thin layer washing and agglomeration, and can wash the thin layer and promote the agglomeration of water-in-oil type microbeads and phase separation.