Abstract: A method of manufacturing a powder injection-molded body, the method including: mixing at least titanium hydrogen compound (TiHx) powder and a binder to prepare a molding mixture; powder-injecting the molding mixture to form a molded product; degreasing the molded product; and sintering the degreased molded product, wherein in the titanium hydrogen compound, the ratio of hydrogen(H) to titanium(Ti) is greater than 0.45 and less than 1.98.