Improved sengstaken-blakemore tube

The utility model discloses an improved sengstaken-blakemore tube which comprises a main pipeline, an insertion part and an external part are arranged at the two ends of the main pipeline respectively, the insertion part is closed, a plurality of through holes are formed in the side wall of the insertion part, the improved sengstaken-blakemore tube further comprises a guide wire, one end of the guide wire is arranged in the main pipeline in a penetrating mode and fixedly provided with a limiting piece, and the other end of the guide wire movably penetrates through the external part; the tension assembly is connected with the end, extending out of the main pipeline, of the guide wire through a silk thread. The guide wire is arranged in the main pipeline in a penetrating mode, and the limiting piece abuts against the interior of the inserting part, so that the whole hardness of the main pipeline can be increased, and the main pipeline can be inserted into a human body conveniently; meanwhile, after the main pip