Downhole oil testing and liquid discharging device

The utility model relates to the technical field of oil testing and liquid discharging devices, in particular to an underground oil testing and liquid discharging device which comprises an outer pipe and an inner pipe, the top of the outer pipe and the top of the inner pipe are respectively connected with a first clamping ring and a second clamping ring in a clamping mode, installation discs are installed on the top end faces of the first clamping ring and the second clamping ring, and limiting rings are installed on the bottom end faces of the installation discs. Two connecting rods are vertically mounted on the top end face of the mounting disc, and a mounting frame is mounted at the top ends of the two connecting rods. Under the action of the first clamping ring and the second clamping ring, when the outer pipe and the inner pipe need to be detached and cleaned, the first clamping ring and the second clamping ring are separated from the outer pipe and the inner pipe correspondingly, separation of the outer