The invention discloses a method for designing a tire die on the basis of Excel and CAD (computer aided design) platforms. The method comprises the following four steps of generating a die standard drawing, creating an Excel platform data processing base, inputting data and creating a function relationship, and storing the data. The method can also be widely applied to design work for a plurality of dies, the defect that each die is required to be independently calculated and designed in the traditional die design is effectively avoided, and the working efficiency of die design is greatly improved; meanwhile, on one hand, the calculation intensity of related parameters in the traditional die design is reduced, the traditional requirement on drawing precision of the die is weakened, the workload of drawing is reduced, and the die designing efficiency is greatly improved, on the other hand, while the die is designed, making work, such as making a part production technical table can also be finished, the workload of designing traditional die machine processing working procedures and making a working procedure sheet is avoided, the workload of mechanical processing is reduced, and the working efficiency is improved.