The invention discloses a cold rolling strip liquid nitrogen refined cooling intelligent control device. A liquid nitrogen refined cooling device and a wireless intelligent control system are designedto realize point-to-point intelligent control of a roller and the strip transverse temperature during the rolling process, and the demands of asymmetrical rolling and other specific technology are met; in addition, nano-particles are added in a liquid nitrogen box to form liquid nitrogen mixed solution, the friction condition and the shape characteristic of a roll gap contact interface of a rolling deformation area are adjusted and the roller copying rate and the rolled strip surface quality are increased and improved.