The utility model relates to a stratified liquid extraction equipment, including draw -out device and floater device, the mi du < of floater device upper portion, the mesh standard solution body is connected and is located to the draw -out device with the floater device, the mi du < of floater device, the density of adjacent lower floor liquid, floater device are floated at the mesh standard solution body juncture with adjacent lower floor liquid, and the extraction mouth lies in draw -out device or floater device, and the extraction mouthful is used for extracting the mesh standard solution body, the utility model discloses simple structure can adapt to various work occasions, also can adapt to various operating temperature through the material that changes the part, and each parts are common part and easily process, all sets up to the generic interface so both convenient combination installations, the convenient dismantlement and the transportation again between each parts.