To increase strength and enable stretching in good appearance for a stretching sheet to be used by stretching for proper purposes, for example, like a sheet such as a shading sheet or the like in agriculture or aquaculture industry, a vegetation net or a protection net to be used for developed land, slop, etc., in civil engineering field, and a protection net or the like for protecting a scaffold and its periphery in construction field.

An accessory material 2 of a stretching sheet body is used for the stretching or the like of the sheet body by fixing on the stretching sheet to be used by stretching. The accessory material 2 comprises plural belt- shaped parts 4, 4 to be fixed on a stretching sheet body 1 placed in parallel with an adequate space between themselves, and linking parts 6 placed between the belt-shaped parts 4, 4 for laterally linking the belt-shaped parts themselves. The linking parts 6 are formed with wefts 7, which form the belt-shaped parts 4. 4. A stretching sheet body 1 having the accessory material 2 fixed on it.