For maintaining the homeostasis of living mammals, the sympathetic and parasympathetic nervous systems are usually antagonized to each other. However, the inervation of the salivary gland is one of the rare exceptions. Stimulation of the sympathetic nerve induces secretion of proteinaceous fluid, while parasympathetic nerve stimulation causes copious secretion of electrolytes-rich fluid. As to the neurotransmitters, both the conventional transmitters (such as adrenalines and acetylcholine) and neuropeptides play an important role in saliva secretion. The main concern of this article is to review from the literature about the innervation of the salivaroy glands, for the hope that this will help us otolaryngologists to learn more about the physiology of the salivary glands.