The present invention relates to an optically diffusing fiber probe, a method for manufacturing the same, and an application thereof. More specifically, the present invention relates to an optically diffusing fiber probe capable of emitting light in a plurality of directions and a method for manufacturing the same, hybrid optical medical equipment for both diagnosis and treatment of tubular human tissue, a catheter-based laser treatment device, and an electromagnetic energy application device for tubular tissue stricture, comprising the optically diffusing fiber probe.