Laiwu, known as "Ying and Mou" in ancient times, also known as Fengcheng, is a former prefecture-level city in Shandong Province (officially abolished in January 2019). It is located in the middle of Shandong Province, at the east foot of Taishan, adjacent to Zhangqiu District of Jinan City in the north, Boshan District of Zibo City and Yiyuan County in the east, Xintai City of Tai 'an City in the south, and Daiyue District of Tai 'an City in the west. The terrain is a semicircular basin with gentle south and steep north and protruding north. Belongs to the temperate monsoon climate, four distinct seasons; With a total area of 2246.21 square kilometers, it has jurisdiction over 2 municipal districts. The permanent population was 1.376 million in 2017.

Laiwu has always been a battleground for soldiers. During the Spring and Autumn Period, the Battle of Changdiao took place here. During the War of Liberation, the East China Field Army launched the Laiwu Battle here. Laiwu has been awarded the titles of "National Sanitary City", "National Garden City", "National Forest City" and "China Excellent Tourist City", and has been awarded the title of "National Model City of Double Support" five times. In 2017, Laiwu was selected as the fifth National Civilized City. In 2017, Laiwu's gross domestic product reached 89.602 billion yuan, an increase of 7.2% over 2016 based on comparable prices. In November 2018, it was listed in the top 100 of China's Comprehensive Well-off Urban Index.

In January 2019, The State Council approved and agreed to abolish the prefecture-level Laiwu City and put the jurisdiction under Jinan City. Laiwu District of Jinan City was established as the administrative district of Laicheng District of Laiwu City. Jinan Gangcheng District was established as the administrative district of the former Laiwu Gangcheng District