The disease called acute sialadenitis is an infectious or inflammatory disorder of the salivary glands. The exact frequency of submandibular sialadenitis is unclear. The acute conditions more typically involve the parotid and submandibular glands. During an acute inflammatory process, there is swelling of the affected gland, overlying pain, gland tenderness, fever, and on occasion difficulty in opening the mouth. Initial treatment includes rehydration, oral antistaphylococcal antibiotic is started while awaiting culture results. Hygiene and repeated massaging of the gland when tenderness had subsided. This present article gives various details such as its etiology, symptoms, treatment, prognosis. The other names of this disease include sialoadenitis, adenitis, salivary gland inflammation