The invention discloses a flux linkage control-based transformer and an excitation surge suppression method. A small-capacity DC/AC converter is connected to a secondary winding or an auxiliary winding of the transformer, a voltage phase of a power grid at a primary side is detected before no-load closing, and a reference instruction of iron core flux linkage is derived according to a relation between a winding voltage and the iron core flux linkage. An iron core flux linkage closed-loop PI control system is built under a synchronous rotating reference system, so that an output voltage of theconverter is controlled, zero-error tracking of the iron core flux linkage on a flux linkage reference value is performed, and sine synchronous flux linkage having phase difference with the power gridvoltage being 90 degrees can be built in advance in an iron core before no-load closing. By the measure, the iron core flux linkage is directly in a steady state without transient process no matter when the transformer is closed, so that the excitation surge can be thoroughly eliminated.