To provide a hot-melt adhesive which has an excellent adhesiveness both to a polyolefin resin-based adherend and to a cellulosic adherend and exhibits an excellent adhesiveness immediately after bonding and after a long period of storage, irrespective of whether the adherend is dry or wet.

The hot-melt adhesive contains an acid-modified thermoplastic block copolymer, a tackiness-imparting resin, a plasticizing oil and a wax. The hot-melt adhesive contains 50-800 pts.wt. of the tackiness-imparting resin, 5-500 pts.wt. of the plasticizing oil and 1-50 pts.wt. of the wax to 100 pts.wt. of the acid-modified thermoplastic block copolymer.