Oral cancer is the first most conman cancer that occurs in men and the third most common cancers among women, it is one of the deadliest disease occurring to the human race. Tobacco is the main culprit or the major causative agent for majority of oral cancer cases.It is highly preventable by the avoidance of etiological factors.there are also other causative factors for oral cancer.This book gives information of all the epidemiological factors and preventive measures for oral cancer.