According to the anti-persecution charity CLAAS the unnamed child and his mother were both accused of burning pages of the Quran in the city of Quetta last week.
While jailed both Christian and Muslim politicians campaigned for their release.
The matter was resolved one day later with the blasphemy accusations quashed.
Nasir Saeed, the director of CLAAS, said this is not the first time that a child has been charged with a blasphemy offence and that this boy "may have never have even heard of the word blasphemy".
He added: "Unfortunately, this is the worst example of hatred and intolerance against Christians and treatment towards them in Pakistan.
"The Government of Pakistan must look into such cases and take appropriate steps to bring necessary changes to stop the ongoing misuse of this law.
"The international community has continuously expressed its concern and called for amendments."
