Vitamin B12 nasal spray

The invention provides a vitamin B12 nasal spray. A used spraying device comprises a spray bottle and a spray head, and is characterized in that the spray bottle comprises a casing (1) and a liner (2) with 2.0 ml volume; the liner of the spray bottle is in a shape of a cylinder, the combination of a cylinder and a cone, or the combination of a cylinder, a cone and a cylinder with a smaller diameter; the casing of the spray bottle is provided with the same shape, size and interface part with a spray bottle of a 10 ml spraying agent device sold in the market presently; and the spray head adopts a spray head of the 10 ml spraying agent device sold in the market presently. The vitamin B12 nasal spray provided by the invention has the advantages of few residues, high safety and multiple times of effective spraying, the production cost can be reduced, and the medicine waste is prevented.