Abstract: Disclosed herein is a portable case for a golf ball equipped with a heat generating device, which can maintain elasticity of the golf ball itself for improving the flight distance of the golf ball, and can keep a golfer player's body warm. The present invention has an accommodating zone being partitioned into a first accommodating space and a second accommodating space by a thin plate, the first accommodating space being adapted to receive a golf ball therein and a second accommodating space being adapted to receive a heat source therein so as to provide resilience to the golf ball.