The incident occurred around 8.20am.
The 30-year-old woman was seen to collapse and fall from the platform onto the track.
The platform security guard immediately alerted the station’s staff to halt the next train and helped get the woman back up on the platform.
She received a slight injury to her leg, according to Anat Arbhabhirama, director of Bangkok Mass Transit System Plc (BTSC), which operates the skytrain.
The woman was rush to a hospital and was reported to be recovering from her lucky escape.