It is particularly suitable for rolling high-precision metal strips, such as plain carbon steel, stainless steel, precision alloy, tool steel, alloy steel, non-ferrous metal thin strips and other materials. The rolling speed of the rolled products is 60m/min-120m/min, and the thickness can be as thin as 0.05mm. The thickness deviation of the product when the thickness is 0.2mm can be ≤±0.004mm. The development of this precision rolling mill adopts the computer simulation method to optimize the frame and roller system, so that it can achieve rigidity under the condition of limited increase in the weight of the frame. The optimized roller system improves the bending resistance of the rolling roll. On this basis, computer-aided design is used to achieve flexible roller system configuration, so that the working rolls can be flexibly interchanged.