The 1st Amphibious Combined Arms Brigade, formerly the 1st Amphibious Mechanized Infantry Division, is a military formation of the People's Liberation Army Ground Force of the People's Republic of China.

The 1st Division (Chinese: 第1师) was created in February 1949 under the Regulation of the Redesignations of All Organizations and Units of the Army, issued by Central Military Commission on November 1, 1948,[1] basing on the 386th Brigade, 1st Column of the PLA Northwest Field Army.

In February 1953 the division entered Korea to took part in Korean War under the command of the Corps.

Since then it became a part of the People's Volunteer Army until 1958, where it moved to Kaifeng, Henan province with the Corps HQ.

In 1962 the division was designated as a "Northern" unit, Catalogue A. the division was shortly moved to Fujian province for an emergency alert deployment with the Corps HQ.