The invention relates to a design method of a few-leaf parabolic isostress steel plate spring provided with ends of different structures and belongs to the technical field of suspension steel plate springs. The design method comprises the steps that firstly, the root thickness he of equivalent single leaves is determined according to the installation structure, required rigidity design value and the parabolic segment thickness ratio primary value of the steel plate spring, and the maximum permissible thickness [h2] of the few-leaf variable-cross-section steel plate spring is determined according to the permissible stress; and secondly, the number N of the leaves of the few-leaf variable-cross-section steel plate spring, the root thickness of the few-leaf variable-cross-section steel plate spring, and the thickness h1i and length l1i of end straight sections and the few-leaf variable-cross-section steel plate spring are designed according to he and [h2]. It is known through an ANSYS simulation verification, by the adoption of the design method, the parameter design values of the few-leaf parabolic variable-cross-section steel plate spring provided with the end of different structures can be obtained accurately and reliably, the design level and performance of a product can be improved, the quality of the spring is improved, the cost of the spring is reduced, and the vehicle traveling smoothness is improved; and meanwhile, design and testing expenses are reduced, and the development speed of the product is increased.