The invention relates to the technical field of production of copper belts, in particular to a short-course production process of a semihard red copper belt. The process includes the steps of melting and casting, double-sided milling, rough rolling, longitudinal shearing of a thick belt, intermediate rolling, annealing, intermediate cleaning, finish rolling, finished product cleaning and aftertreatment. By optimizing the process course and the machining passes of the rolling procedure, the machining course is shortened, the machining time is shortened, and the production efficiency is improved; and meanwhile, by optimizing the annealing temperature, temperature rise and heat preservation time, the product properties are improved.