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1. A balloon catheter, comprising a rapid exchange structure having a balloon catheter body and a hub, wherein the balloon catheter body has a push member, a transition member, a balloon loading member, a balloon, an imaging mark and a tip head, the balloon loading member comprises an outer tube and an inner tube, a distal end of the hub is connected with a proximal end of the push member, a proximal end of the transition member extends from a distal end of the push member, a distal end of the transition member is nested inside a proximal end of the outer tube of the balloon loading member, the balloon loading member loads the balloon, the tip head is provided on a distal end of the balloon, the imaging mark is provided on the balloon loading member, characterized in that the balloon has a wall thickness of 10-14 microns, the balloon has a nominal dilation pressure of 3-4 atm, and the balloon catheter has a rated burst pressure of 10-12 atm, and the balloon can deflect to an angle of 45 degrees in upright state, wherein the balloon is manufactured from an initial tube having an outer diameter of 0.5 mm-1.4 mm, and a wall thickness of 0.20 mm-0.60 mm, and a concentricity of 80%-100%; the manufacture of the balloon involving heating the initial tube to reach a glass transition temperature, inflating the initial tube and stretching the initial tube to shape in a mold; wherein, in the manufacture of the balloon, the initial tube bears a stretching rate of 150%-400% and an inflation ratio of 2.5-4.0.
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