The present invention provides a method of manufacturing a hose coupling fitting (10), which may manufacture high-precision nipple portion (20) with a series of procedures of cold forging. The hose coupling fitting (10) includes: a coupling head portion (14) having a connecting hole (14a) for connection to a pipe; and a nipple portion (20) having a nipple hole (22a) for connection to a hose, the method comprising: a plurality of sequentially performed cold forging steps carried out on a column-shaped rod material (12A), wherein the plurality of steps include: forming a first pilot hole (14Aa)which extends along a center axis of the rod material (12A) from an end of the rod material to form the connecting hole, and forming a second pilot hole (22Aa) which extends along the center axis of the rod material from an opposite end of the rod material to form the nipple hole; and forming the coupling head portion by forging a portion surrounding the first pilot hole, and the nipple portion by forging a portion surrounding the second pilot hole, wherein the second pilot hole is connected to the first pilot hole, and is formed with smaller diameter than the first pilot hole and larger diameter than the nipple hole (22a).