The invention relates to a simulation calculation method for initial tangent arc heights of taper leaf springs with reinforced ends and unequally-thick roots, and belongs to the technical field of fewtaper leaf springs of a suspension. Through the adoption of the method, according to the number of the leaf springs, elasticity modulus, thicknesses of root and end gaskets, structural parameters ofeach leaf spring and a design value of height of each free tangent arc, simulation calculation can be performed on the initial tangent arc height of each leaf spring after assembly and clamping of thefew parabolic taper leaf springs with the reinforced ends and the unequally-thick roots. Prototype testing proves that the simulation calculation method for the initial tangent arc heights of the taper leaf springs with the reinforced ends and the unequally-thick roots is correct, and a reliable technical method is provided for simulation calculation of the initial tangent arc height of the firstleaf spring after assembly and clamping. By means of the method, the initial tangent arc height of the first leaf spring after assembly and clamping can meet the design requirement, design level andreliability of the product as well as vehicle traveling safety are improved, and service life of the product is prolonged; meanwhile, design and testing expenses of the product are reduced, and the product development rate is increased.