Tianjin was once a part of the Bohai Sea in ancient times, and the land was gradually alluvial. In the Xia Dynasty, it belonged to Jizhou. During the Zhou Dynasty, it was a secluded state. During the Warring States period, it belonged to Zhao Heyan. During the Western Han Dynasty, it belonged to Yuyang and other counties. After the mid-Tang Dynasty, Tianjin has become a wharf for transporting rice and silk from the south to the north.

During the Song and Liao Dynasties, Haihe River was called "Boundary River" at that time. To the north of Haihe River, it belongs to Wuqing County (later changed to Tianjin Prefecture); South of Haihe River, the Gan-Ning Army belonging to Lu Guan was in Levin and Qingchi County in Cangzhou in the Northern Song Dynasty. In the Song Dynasty, many military strongholds such as Gu Ni, Shuanggang, Sannv, Nanhe, Shawo and Liu Du were set up in the south of Haihe River to prevent the Liao army from going south.

Two years ago (12 14), Jin Zhenyou set up "Zhiguzhai", and sent the commander-in-chief to protect Yan Yan, while the deputy commander-in-chief bit the defenders. The name "Zhigu" began to appear in Historical Records. Tianjin has become the military center of southern Jilin.

In the 19th year of Yuan Dynasty (1282), the maritime waterway was opened, and zhi gu became the hub of waterway transportation. Therefore, the Transportation Pavilion and Linqing Wan Hu Pavilion are both located in zhi gu. And built granaries such as Zhigu Guangtong Warehouse. To the first year (1264- 1294), Tianhou Palace (East Palace and West Palace) was built in Dazhiyuan and Sanchakou respectively. 1234, brine gushed out in sancha valley area, and households such as Gao Song and Xie Shi were chartered to set up stoves to cook salt here; Two years later, we established "Three Branches Valley Division" and "Dazhigu Division" to manage Zhigu Salt Field.

In the third year of Yuanyou (13 16), Haijin Town was set up in Zhi Zhi, and the lieutenant was ordered to command Bo Yan to guard it.

In the second year of the Ming Dynasty (1400), Judy, the prince of Yan, fought for the throne with her nephew in the name of "Jingnan", led his troops to attack Cangzhou and capture Nanjing, seized power in the fourth year of Wenjian (1402), and changed to "Yongle" the following year.

In the second year of Yongle (1404 65438+February 23rd)1/month 2 1 day, a garrison was set up in Zhigu, and the ministers of the Ministry of Industry, Huang Fu and Jue of Pingjiang were ordered to command Lingyun and Tongzhi Huanggang to build a city, giving the name "Tianjinwei".

Tianjin Zuo Wei was established on December 9th, the second year of Yongle (1405 65438+ October 9th). In the fourth year of Yongle (140665438+February 18), Qingzhou Youwei was changed to Tianjin Youwei.

The early years of the Qing dynasty followed the various systems of the Ming dynasty. In the ninth year of Shunzhi (1652), the left and right guards were merged into Tianjinwei, ending the hereditary system of health officials. After the merger of the three flavors, a "patrol" and "tongzhi" were set up to be in charge of civil affairs; "Hu Cao" and "salt administration" are responsible for taxation and salt industry; Company commanders, guerrillas and generals are in charge of the military.

In the third year of Yongzheng (1725), Wei Gaizhou and Tianjin began to establish local governments; In the ninth year (173 1), it was promoted to the state capital, governing six counties and one state, namely Tianjin, Jinghai, Qingxian, Nanpi, Yanshan, Qingyun and Cangzhou.

19 12 (the first year of the Republic of China) In March, Yuan Shikai became the president of the Republic of China, and the "Beijing Government" (hereinafter referred to as "Beiyang Government") was established. In July of that year, the organizational system of Tianjin County was abolished and the "government" was retained; 19 13 In April, Tianjin Special Zone was cancelled and Tianjin County was rebuilt.

1June, 928, the National Revolutionary Army occupied Tianjin, and the Nanjing National Government established "Tianjin Special City". 1June, 930, Tianjin Special City was changed to Tianjin directly under the jurisdiction of the Executive Yuan of Nanjing National Government. 1930165438+10. In October, as the capital of Hebei Province moved from Beijing to Tianjin, Tianjin became a municipality directly under the central government. 1June, 935, the capital of Hebei moved to Baoding, and Tianjin was changed to a municipality directly under the central government.

In addition, in the 26th year of Guangxu (1July, 900 14), on June 18, Eight-Nation Alliance captured Tianjin, and on July 5th, it formed Tudor yamen (hereinafter referred to as Tudor yamen), and imposed military colonial rule on Tianjin for two years.

1937 On July 30th, the Japanese invaders invaded Tianjin, and the pseudo-Tianjin local security institute was established the next day. 65438+February 65438+July, the pseudo-Tianjin local security conference was reorganized into the pseudo-Tianjin special municipal office; 1943165438+1October, the pseudo-Tianjin Special Municipal Office was renamed as the pseudo-Tianjin Special Municipal Government, and the people of Tianjin suffered fascist rule for eight years.

1949 15 years 10/5, Tianjin was liberated, Tianjin Military Commission was established, and Tianjin Municipal People's Government was also established. In February 1958, 1 1, Tianjin was changed to a city under the jurisdiction of Hebei Province. 1967 1.2, Tianjin was changed into a municipality directly under the central government until today.