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Saliva is defined as a watery secretion in the mouth produced by the salivary glands that aids in the digestion of food. Saliva is secreted by major and minor salivary glands. Major salivary gland comprises of parotid gland, submandibular and sublingual gland. Minor salivary glands are smaller compared to major salivary glands mostly seen in lips, tongue, palatal, buccal mucosa, glossopalatine, retromolar area and floor of the mouth. There are more than hundreds of minor salivary glands present throughout the mouth. Minor salivary glands are further divided into labial, buccal, glossopalatine, palatine and lingual glands. Furthermore, a new salivary gland is discovered by a team of researchers in 2020 named tubarial gland located on either side of nasopharynx and connects the nasal passage. (1) Salivary gland contains a secretory unit and ductal unit, consist three types of cells which includes acinar cells, ductal cells and myoepithelial cells. The acinar cells secret the saliva and determine the type of secretion either it is mucous, serous or mixed. The ductal cells are classified into intercalated ductal cells, striated ductal cells and excretory ductal cells. Myoepithelial cells contain long process which wraps around the acinar cells it contracts the acinar cells and squeezes out the secretion.