Salivary gland tumours or neoplasms are tumours that form in the tissues of salivary glands. Salivary stimulants are probably only useful in people with some remaining detectable salivary function. The glossopharyngeal nerve has parasympathetic fibers that innervate the parotid salivary gland. Mouth diseases include tongue diseases and salivary gland diseases. Other animal studies showed breast cancer and salivary gland cancer. Pathogenic process occurs due to circulating CD8 lymphocytes within the salivary gland. These are close to the main glands and consist of ectopic salivary gland tissue. Acetylcholine has the function of stimulating the salivary glands to actively produce saliva. It arises from deep part of submandibular salivary gland . This is then usually followed by painful swelling of one or both parotid salivary glands. There are many types of salivary gland cancers. Overall, the mainstay of the treatment for salivary gland tumor is surgical resection. Food is moistened by saliva from the salivary glands (parasympathetic). Acute infections have high morbidity and tropism for the salivary, lachrymal and harderian glands. Salivary secretion is also associated with nausea.