Speaking at a forum, Sheikh Mohammed bin Abdulrahman al- Thani said Qatar's leader had accepted the invitation to attend, amid the region's worst political crisis in years.
"I will attend the ministerial council tomorrow and the emir will attend the summit," said the minister.
He added that Qatar had not yet seen the summit agenda, but the current crisis would be discussed at the meeting.
"It is important that the GCC system remains alive," said the minister.
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It was the first such invitation during the ongoing and increasingly bitter Saudi-led diplomatic boycott of Doha.
The summit will start on December 5, the six-month anniversary of the start of the crisis.
It was unclear who would represent the other members of the GCC at the gathering.
On June 5, Saudi Arabia, Bahrain, the United Arab Emirates and Egypt abruptly cut all ties with Qatar over accusations Doha supported extremism and was close to Shiite Iran. Qatar denies the allegations.
Since the beginning of the crisis, all diplomatic communication between Qatar and the boycotting countries has been stopped.
Kuwait and Oman have not taken part in the boycott of the tiny gas-rich emirate, and Kuwait's Emir Sheikh Sabah al-Ahmad Al-Sabah has acted as a mediator in the crisis.