The invention belongs to the technical field of mineral recycling, and particularly relates to a method for flotation and recycling of tungsten and tin from scheelite smelting slag. According to the method, plastic bags, weeds and other various large-particle impurities are removed from the tungsten smelting slag; then the tungsten smelting slag is fed into a microbubble flotation column to be subjected to flotation; the flotation ore PH value is adjusted through sulfuric acid, sodium silicate and sodium polyacrylate serve as an ore pulp dispersing agent, styrene phosphoric acid and carboxyl hydroximic acid serve as a tungsten and tin collecting agent, and CMC and sodium humate serve as a gangue inhibitor; and the high tungsten and tin concentrate grade and recycling rate are obtained through primary roughing, primary fine selecting and primary scavenging. By means of the provided method, the tungsten and tin can be efficiently recycled from the tungsten smelting slag, and energy consumption is lower than energy consumption of a traditional flotation machine by 50%-100%; and the microbubble flotation column is adopted, the process is short, the occupied area is small, control is easy, recycling is simple and convenient, and industrial application is convenient.