To solve such a problem that, since a locking groove of a rolled web core is formed of resin for light rotation, when wallpaper with a lighter weight by 40% than conventional ones is pasted, the rolled web core is rotated lightly, and as a result, a wallpaper web roll rotates lightly, thus causing meandering or wrinkles due to poor tension.

The wallpaper pasting machine includes: a core attachment hole for inserting the rolled web core; a locking means for holding the rolled web core inserted into the core attachment hole not to be rotated; and a paper receiving bracket locking part that abuts against a paper receiving bracket for locking. The wallpaper pasting machine includes a rolled web core fixing tool that holds the rolled web core not to rotate even if the wallpaper pasting machine is operated by the paper receiving bracket locking part to abut against the paper receiving bracket for locking while the locking means holds the rolled web core not to rotate.