Helpers rushed to the scene on Gordon Street in the city center after being called around 7:30 p.m.
The victim was rushed to hospital for treatment for a stabbing.
His injuries are not considered life threatening.
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Another man was arrested at the scene on suspicion of aggravated assault and possession of an offensive weapon.
He was taken into custody for questioning.
A knife was recovered from the scene.
We and our sister title Glasgow Live have previously reported on how Gordon Street outside the station was cordoned off by the police.
A spokesperson for the UK Transport Police said: ‘Officers received a report of an assault at Glasgow Central Station shortly after 7.30pm this evening.
“A man was arrested at the scene on suspicion of serious assault and possession of an offensive weapon, and was taken into custody for questioning.
“The victim was taken to hospital where he is being treated for a stab in the shoulder. Fortunately, we don’t think his life is in danger.
“A knife was recovered from the scene and investigations into the incident are currently underway. “