The invention discloses a method for obtaining one-way moisture conduction fabric by use of foam finishing. The method comprises the following steps of: preparing 10-60g/L water repellent agent, 10-40g/L foaming agent, 2-10g/L foam stabilizer and water into foam finishing liquid; foaming the foam finishing liquid; applying foam finishing to the foam on one surface of fabric; and drying the fabric after the foam finishing at 80-100 DEG C, and baking at 140-170 DEG C for 1-4 minutes to obtain the one-way moisture conduction fabric. The method disclosed by the invention is simple in technology, saves energy and water, causes little sewage discharge, and realizes stable production and high production efficiency; and moreover, the obtained product has obvious one-way moisture conductivity and good consistency, and can be widely applied to sweaters, underwear, socks and the like.