The invention discloses a processing technology of a curl-resistance PE cast film. The cast film prepared by the technology has excellent optical performance and thickness uniformity, a very high production speed can be obtained due to adoption of a quenching roller, and the form structure of the film is improved; the curl-resistance property and flatness of the film can be effectively improved, the characteristics of good curl-resistance property, good flatness and the like are achieved, meanwhile, the advantages of high production speed, high yield and the like are achieved, large batch production is facilitated, the thickness control precision of products is high, meanwhile, the thickness uniformity is good, the transparency and glossiness are made excellent synchronously, the balance performance in all directions is outstanding, all layers of melt can be uniformly distributed after spreading on a die head, mutual mixing among all layers of materials can be prevented, the overall thickness can be monitored and adjusted, and the thickness of certain key functional layers can be monitored and adjusted.