Present-day Longlin was first incorporated into the
Song dynasty in 1253, when it fell under the jurisdiction of
Anlongdong as part of the . In 1402, the area was reorganized as
Anlong Prefecture, until 1666, when it was again reorganized as . Xilong Prefecture underwent administrative changes in 1729, but otherwise went unchanged until 1912, when the
Republic of China was established and the area was reorganized as
Xilong County. The area became part of the
People's Republic of China in March 1950, and a communist-led local government was set up on March 18, 1950. On January 1, 1953, the area was renamed from Xilong County to Longlin County. == Geography ==