To provide fittings and its manufacturing method capable of promoting durability of the fittings so as not to deform the fittings even if the fittings are used for a long period and reducing a manufacturing cost of the fitting having a high-grade sense.

The fittings 10 include a rectangular core frame body 11 having up and down rail cores 14 and 15 and right and left stile cores 12 and 13 and a plurality of frame facing plates 22a to 25b stuck on both sides thereof. Each of the frame decorative plates integrally forms the circumferential edge section 27 in one side in the direction of the width. A panel material 21 held between the circumferential edge sections 27 of the frame facing plates stuck on both sides of the core frame body 11 is held to the inside of the core frame body 11. A butt section of the frame decorative plates is put on the same frame core.