A Adenoid cystic carcinoma is a rare malignant tumor that effects the majorand minor salivary glands. Approximately 50 to 70% of reported casesoccur in the minor salivary glands. The palate is the most common site ofminor glands tumor. The etiology of this tumor is unknown. Adenoidcystic carcinoma is most common in middle-aged adult and is rare inpeople younger than age 20, most common are female. These lesions aregenerally characterized by a slow growth rate and facial nerve paralysismay occasionally be the initial presenting symptom. Microscopically, theadenoid cystic carcinoma is composed of a mixture of myoepithelial cellsand ductal cells that can have three pattern a varied arrangement :cribriform, tubular and solid. The most effective therapy for adenoid cysticcarcinoma is a combination of radical surgery and radiation therapy. Deathusually results from local recurrence or distant metastases.