今天的威海市区,汉代称石落村,元代称清泉夼,明代在这里设卫屯兵,时称威海卫。从此,中国的地图上才有了“威海”这个名字,并越来越被世人所了解、所熟知。卫是明朝卫所兵制的产物。朱元璋和他的高参刘基,对厉代兵制进行了认真的研究,创立了明代所特有的卫所兵制。卫所兵制的军队,大体分八级,由高到低分别为：大都督府、都督府、都指挥使司、卫、千户 Today’s Weihai city, Han Dynasty, said Shek Pik village, Yuan Dynasty, said Qingquan 夼, here in the Ming troops stationed troops, said Weihai Wei. Since then, the name Weihai has been on the map of China and is becoming more and more known to the world. Wei is the guard of the Ming Dynasty soldier product. Zhu Yuanzhang and his high-ranking Liu Ji made a serious study of the Li-generation military system and founded the Wei-style military system unique to the Ming Dynasty. Guard troops, generally divided into eight levels, from high to low respectively: the Metropolitan Government, Dudu Fu, command the Secretary, Wei, one thousand