The invention discloses a hold rail-type track transportation bridge evacuation maintenance platform, which comprises a horizontal beam that is set between two parallelly set single line box beams and that is set at interval along the longitudinal direction and is characterized in that the platform provided herein also comprises a longitudinal maintenance channel set above the horizontal beam and an evacuation channel set above the maintenance channel; and two ends of the horizontal beam are provided with uprights used for supporting the evacuation channel. According to the invention, the evacuation maintenance platform is set on the horizontal beam; evacuation channel and maintenance channel structures are adopted; the evacuation channel and the maintenance channel are not influenced by each other; and the platform provided herein has the advantages of simple structure, convenient use and high safety.