  In this paper, we extend Joule-Thomson expansion to the low-dimensional
regime in rainbow gravity by considering the rainbow rotating BTZ metric in the
(2+1)-dimensional spacetime. After the metric of the black hole is obtained, we
get the Joule-Thomson expansion of the black hole, including the Joule-Thomson
coefficient, inversion curves, and isenthalpic curves. We find that a rainbow
rotating BTZ black hole does not have $P-V$ critical behavior. The effects of
rainbow gravity are to slow down the trend of the increase of the Joule-Thomson
coefficient and make its zero point larger. Moreover, the rainbow gravity slows
down the inverse temperature of the black hole, meaning that a rainbow rotating
BTZ black hole tends to change its heating or cooling action at a lower
temperature, which can be attributed to the topology of the black hole.
