The invention discloses an application of aureomycin in preparation of a
medicine for preventing and treating depression or
anxiety behaviors. Experimental results indicate that AUN (aureusidin) can effectively increase the exploration frequency and the
retention time of a model mouse on an open arm of an elevated cross labyrinth, improve the activity of the model mouse in a central area of an
open field and remarkably improve depression or
anxiety behaviors of the model mouse. The invention proves that the AUN has a
potential effect of preventing and treating depression or
anxiety behaviors, provides an experimental basis and theoretical support for developing novel medicines for treating neuropsychiatric diseases by using natural products, and has a wide application prospect.