There is provided a production method for a titanium-alloy connecting rod that ensures high rigidity of a cutting tool. One embodiment of the present invention provides a production method for a titanium-alloy connecting rod (1) in which a rod portion (33) and a cap portion (34) of a big end (30) are fixed by using a bolt (40). The production method for the titanium-alloy connecting rod (1) includes a step of forming a bolt hole (32) for the bolt (40) to extend therethrough. The step of forming the bolt hole (32) includes: forming a first hole (61) in the cap portion (34) and the rod portion (33) in a direction from the cap portion (34) toward the rod portion (33); and forming a second hole (62) in the rod portion (33) in a direction from the rod portion (33) toward the cap portion (34). Once the first and second holes are formed, the first hole (61) and the second hole (62) communicate with each other. The longitudinal direction (LD2) of a cutting tool (52) used for forming the second hole (62) is inclined with respect to the longitudinal direction (y) of the rod main body (10) of the titanium-alloy connecting rod (1).