PROBLEM TO BE SOLVED: To provide a device for producing a balloon catheter capable of properly adjusting welding degree, forming into a desired shape suitable for applications, capable of being well used for a medical use, and a method for producing the same.SOLUTION: An outer periphery of a part to be welded and a shaft 14 are heated and welded by irradiating a balloon end part 28b, the outer periphery of the part to be welded of a catheter tube 30a and the surface of the shaft 14 with laser light respectively by first and second laser irradiators 8, 108 while rotating the shaft 14 by a fixed chuck, with the catheter tube 30a inserted in the balloon end part 28b, with the shaft 14 inserted in the catheter tube 30a, and with a compressing tube 32 fitted to the part to be welded of the balloon 28.
