The invention belongs to the field of electric power systems, in particular to an analysis method of electromagnetic disturbance of intrusion waves to a transformer station intelligent assembly and communication equipment. The analysis method comprises steps of giving transformer station region common lightning current I and transformer station operation modes; according to a main wiring diagram of a transformer station, if a tower is stricken by lightning, establishing a tower and transformer station primary system model; if on-off operation is carried out, establishing a transformer station primary system module; calculating primary side voltage U1 of a voltage transformer; establishing a voltage transformer cable model; and according to the voltage transformer cable model, obtaining tail end disturbance voltage U of a secondary cable connected with the intelligent assembly and the communication equipment. By use of an evaluation method provided by the invention, the electromagnetic disturbance of two kinds of faults of the transformer station to the intelligent assembly and the communication equipment can be evaluated simply, effectively and directly, and reliable design and construction performed on anti-electromagnetic disturbance of secondary equipment of the intelligent transformer station are facilitated.