To provide a miniaturized and lightened alarm capable of warning the danger of collision to surrounding people by a skier by internally mounting an alarm composed of an emergency switch, an electronic circuit for a sound generation, a speaker and a dry battery at a head of a ski pole so as to easily attach/detach it.

A dry battery 5b and a sound generating circuit 6 are mounted inside a cylindrical container 3a. A lid member 1 is provided with a push button switch 1a and an outer cylinder 2 is provided with an original power source switch 5a. Besides, plural holes and openings 2a, 3c and 4c for sound transmission are respectively provided on the outer walls of the outer cylinder 2, a cylindrical container 3a and upper part 4a of a pipe. A stick-shaped protruding part 3b on the outer face of the cylindrical container 3 with such a built-in alarm is fitted to a notched part 4b at the upper end of upper part 4 of the pipe and its rotation is fixed while pressing a spring 3d. A screw groove 4d at an upper part 4 of the pipe and a screw 2b of the outer cylinder 2 are fixed by screwing. A sound generating circuit 6 is operated by manipulating the button 1a, sounds are discharged from the holes and apertures 2a, 3c and 4c to the surroundings and alarms are issued.