The invention relates to a generation method of a large-area uniform vertical variable coupling motion magnetic field. The uniform vertical variable coupling motion magnetic field is established by adopting the method can meet a meter-scale range and has good vertical directivity in an experiment space, and the magnetic field intensity change at the same height does not exceed 1%. The generation method of the large-area uniform vertical variable coupling motion magnetic field is used for providing the large-area magnetic field required in the experiment space, enables magnetic fields at any point in the vertical direction in a same-height uncontrolled state to be identical in size and meanwhile enables the sizes of the magnetic fields at different heights in the space to be up to required constant values through control.