The invention belongs to the technical field of medicines, and particularly relates to novel application of dihydromyricetin. According to the invention, through dihydromyricetin, the ATP supply of the brain is increased, and the protein level of Gephyrin is increased; the Gephyrin is the core skeleton protein of a central nervous system (CNS) inhibitory post-synaptic protein network, has the effects of participating in the formation of inhibitory synapses, stabilizing inhibitory synaptic receptors, regulating synaptic plasticity and the like, and has the function of improving the inhibitory neurons of the brain; and the dihydromyricetin can improve dependence and withdrawal reaction of animals on morphine and alcohol by adjusting the functions of GABA (gamma-aminobutyric acid) and dopaminergic neurons, and is high in safety.