The utility model discloses a device for identifying stability of shied residue soil improving foam. The device comprises an electronic scale (9) and a support (6) placed on the electronic scale (9); a net bag (2), and a funnel (3) positioned below the net bag (2) and butted with the net bag (2) are mounted on the support (6); the aperture of the net bag (2) is less than 0.1 mm; the outlet of the funnel (3) is connected with a plastic pipe (4); the outlet of the plastic pipe (4) is butted with a plastic cup (8); the device further comprises a big beaker (1) which can accommodate the net bag (2), the funnel (3) and the plastic pipe (4); the net bag (2), the funnel (3), the plastic pipe (4), the support (6), the plastic cup (8) and the electronic scale (9) are placed in a glass cover (10). The device for identifying stability of shied residue soil improving foam is effective and reliable.