7000 years ago, human beings had started their lives and breeds in Weihai. The land had been governed by the State of Lai in the Shang & Zhou Dynasties respectively and by the State of Qi in the Zhou Dynasty till the day when the first Emperor of Qin unified China. After that, the governance was transferred to prefecture Qing, prefecture Deng, and prefecture Lai.

In the 31st year of Hongwu period (the year 1398) of Ming Dynasty, the rulers set forts and quartered troops here in order to defense Japanese pirates, and intitled the place with the name Weihaiwei, which means Having strong power in ruling over coastal territory. Subsequently, in the 14th year of Guangxu period (the year 1888) of Qing Dynasty, the rulers established the Beiyang Navy in Liugong Island, which ranked the 1st in Asia and 6th in the world. In 1894, the Sino-Japanese War (1894-1895) broke out from Weihai.

Beaten in the battle, Weihai and New Territories of Hongkong started to be leased to British Government in the 24th year of Guangxu period (the year 1898) of Qing Dynasty. In the following 32 years, Weihai was under the British colonial domination, and had experienced enormous changes in its society, social customs and archetectural style,ect..

In October of 1930, the Chinese National Government reclaimed the dominance of Weihaiwei, and established Weihaiwei Special Administrative Region, which was directly governed by the National Executive Office. Weihai can be considered as the earliest special region of China.

In 1945, Weihaiwei was liberated from Japanese invaders and directly governed by Jiaodong Administrative Office. Afterwards, it was ruled by the Donghai Prefecture, Wendeng Prefecture, Laiyang prefecture, and Yantai prefecture. In June of 1987, Weihai was granted as a prefecture-level city by the State Council.

Weihai was among the first group of 14 costal open cities and 18 National Model Cities for reform and opening-up. Weihai was not only an old city with long history but also a new city with a prosperous future.