A radar reflector operating device for indicating an emergency position, comprising: a case including an accommodation space, and further including a first detent and a second detent; a pull trigger accommodated in the inside of the case and including a first projection having a right triangle section and caught between the first detent and the second detent; a compressed air container configured to store a compressed gas and include a gas jet, and accommodated in the inside of the pull trigger, the gas jet being connected to a gas ejection nozzle that is installed at a through hole of the pull trigger; a radar reflector made of a flexible material and accommodated in the inside of the case in a wrinkle type like a zabara, and including a gas injection nozzle that is placed at one end of the radar reflector and closely connected to the gas ejection nozzle, the radar reflector being configured to inflate and secede from the inside of the case if the compressed gas is injected through the gas injection nozzle, and float in the air; a cable configured to connect the case with the radar reflector; a pull switch connected to the pull trigger and configured to pull the pull trigger, wherein a slope of the first projection installed at the pull trigger meets with a slope of the second detent installed in the case allowing the gas ejection nozzle installed at the pull trigger to move towards and to enter at the gas jet; and a press switch installed at the case, wherein the press switch includes a second projection having a slope meeting with a slope of a third detent installed in the inside of the case when the press switch is pressed, the press switch being configured to press the compressed air container against the pull trigger fixedly caught by the first projection having a surface abutting against the first detent allowing the gas jet to enter at the gas ejection nozzle, wherein the second projection at the press switch further has a surface abutting against the third detent when the pulling of the pull trigger moves the gas ejection nozzle towards the gas jet at the compressed air container. a case including an accommodation space, and further including a first detent and a second detent; a pull trigger accommodated in the inside of the case and including a first projection having a right triangle section and caught between the first detent and the second detent; a compressed air container configured to store a compressed gas and include a gas jet, and accommodated in the inside of the pull trigger, the gas jet being connected to a gas ejection nozzle that is installed at a through hole of the pull trigger; a radar reflector made of a flexible material and accommodated in the inside of the case in a wrinkle type like a zabara, and including a gas injection nozzle that is placed at one end of the radar reflector and closely connected to the gas ejection nozzle, the radar reflector being configured to inflate and secede from the inside of the case if the compressed gas is injected through the gas injection nozzle, and float in the air; a cable configured to connect the case with the radar reflector; a pull switch connected to the pull trigger and configured to pull the pull trigger, wherein a slope of the first projection installed at the pull trigger meets with a slope of the second detent installed in the case allowing the gas ejection nozzle installed at the pull trigger to move towards and to enter at the gas jet; and a press switch installed at the case, wherein the press switch includes a second projection having a slope meeting with a slope of a third detent installed in the inside of the case when the press switch is pressed, the press switch being configured to press the compressed air container against the pull trigger fixedly caught by the first projection having a surface abutting against the first detent allowing the gas jet to enter at the gas ejection nozzle, wherein the second projection at the press switch further has a surface abutting against the third detent when the pulling of the pull trigger moves the gas ejection nozzle towards the gas jet at the compressed air container.