The present invention provides a method for manufacturing a medical basket treatment tool. The method for manufacturing a medical basket treatment tool having one or more wire formed using an alloy containing two or more metals includes a heating process of performing heat treatment on a target portion of at least one wire among the wires one or more times, the heat treatment irradiating the target portion with a laser with an irradiation fluence of 103 J/cm2 or more and heating the target portion to become a predetermined temperature lower than the solid solubility limit of the alloy.
