The invention discloses an experimental high speed railway bow net electromagnetic noise generating device, and belongs to the technical field of sliding electrical contact of electrified railway locomotives. The experimental high speed railway bow net electromagnetic noise generating device simulates high-speed sliding electrical contact in a railway bow net so as to generate electromagnetic noise, and is used for researching a generation mechanism, influencing factors, spatial and temporal distribution rules and restraining method of the bow net electromagnetic noise. The experimental high speed railway bow net electromagnetic noise generating device comprises a base, a transverse moving mechanism and a rotary disc transmission mechanism are arranged on the base, a sliding plate pressure adjusting mechanism is arranged on the transverse moving mechanism which is formed by a transverse moving platform base, a transverse moving platform, a connecting rod, a crank disc with an eccentric shaft and a transverse moving platform driving motor, the sliding plate pressure adjusting mechanism is formed by a U-shaped base, a stepping motor, a slide bar, a ball screw, a driving sliding platform, a spring, a pressure sensor, a driven sliding platform, an insulating plate, a conducting wire and a carbon sliding plate, and the rotary disc transmission mechanism is formed by a rotary disc, a friction conducting wire, a rotary disc driving motor, a belt pulley, a belt and bearing seats.