Thermosetting binder, inorganic fiber product using the same

A thermosetting binder that exhibits good binder performance without using formaldehyde as a raw material, and an inorganic fiber product using the same are provided. A thermosetting binder containing a saccharide, an ammonium salt, and a phenol. An inorganic fiber product comprising a molded body obtained by molding inorganic fibers using the thermosetting binder. [Selection figure] None