A webbing for a seat belt is provided which utilizes thick warp and thin and has good sense of touch. The webbing (10) includes a base (11) made by interlacing main warps (M) and wefts (W); and thin warps (A-C, a-c) that are woven into the base (11). The webbing (10) is characterized in that on the surface of the webbing (10), the thin warps (A-C, a-c) cover the main warps (M). The main warps (M)meander so as to pass over odd-numbered wefts (1, 3) and to pass under even-numbered wefts (2, 4). The thin warps (A, B, C) cover the main warps (M) of the base (11) on the upper surface of the webbing (10). On the back surface of the webbing (10), the thin warps (a, b, c) cover the main warps (M) of the base (11).