Novel sampling tube

The utility model relates to a novel sampling tube, including receiving and placing tube and plugging cap, receiving and placing tube includes the tube body that the both ends are in the state of opening, the lower part of inside of the tube body is provided with the conical bottom seal that is in the state of placing, the outer side of the opening at the upper end of the conical bottom seal is connected with the tube body, the upper end of the tube body is provided with a thread area. The plugging cap comprises a lower cap body and an upper cover body arranged above the lower cap body, a clamping table is arranged on the outer ring face of the upper end of the lower cap body, and a flexible connecting strip is jointly connected between the outer surface of the upper end of the lower cap body and one side of the outer ring face of the upper cover body. And the inner ring surface of the lower end of the lower cap body is matched with the thread area of the pipe body and is in threaded connection with the pipe