The invention discloses a method for improving the bearing strength and tensile capacity of the tubular pile end, which relates to foundation treatment, and a techniques and a method for improving the bearing capacity of the foundation, reducing the settlement of the foundation and improving the tensile capacity of the tube pile. Currently, prefabricated tube piles are commonly used. Because the surface smoothness and the diameter of the prefabricated tube pile are smaller, compared with the cast-in-situ bored pile, the bearing capacity of the prefabricated tube pile (compression resistance and uplift resistance) is not high. In order to improve the bearing capacity of the prefabricated tube pile (compression resistance and uplift resistance), and also reduce the settlement of the foundation, the invention adopts the bottom-enlarging technology and additionally arranges anti-drawing steel strands to form an enlarged bottom on the bottom of the prefabricated tube pile so as to greatly improve the bearing capacity of the tubular pile end and reduce the settlement of the tubular pile end. And by additionally arranging the anti-drawing steel strands in the tube pile, the tensile capacity of the tubular pile end can be greatly improved.