The present invention relates to a mobile ventilation device. According to the present invention, an air flow is formed during a movement of a blower fan to and from various sites in a loaded article storage place while three-dimensional mapping and matching are performed based on a wall position in the loaded article storage place, a position of a loaded article therein, a wall height in the loaded article storage place, a height of the loaded article therein, and a height-specific gas concentration value by position, and thus control can be performed with respect to optimum movement route, optimum blowing intensity, angle, direction, time, and the like for gas removal. The mobile ventilation device according to the present invention for guiding of gas in the loaded article storage place toward a ventilation window includes: a moving wheel； a body portion having a shaft of the moving wheel disposed and providing a driving force for the shaft； a gas measurement sensor mounted on the body portion for gas concentration measurement； a distance measurement sensor mounted on the body portion for measurement of a distance between the body and a wall of the loaded article storage place or between the body and the loaded article； a blower fan provided in an upper portion of the body portion； and a control unit controlling the driving force provided for the moving wheel based on the gas concentration value measured by the gas measurement sensor so that the blower fan is positioned at a particular position in the loaded article storage place and controlling a driving force of the blower fan.본 발명은 송풍팬을 적재물 보관 장소 이곳 저곳으로 이동시켜가면서 기류를 형성하되, 적재물 보관 장소의 벽 위치, 그 내부의 적재물 위치, 적재물 보관 장소의 벽 높이, 그 내부의 적재물 높이, 그리고 각 위치에서의 높이별 가스의 농도값을 토대로 3차원적인 매핑과 매칭작업이 수행되므로, 가스 제거를 위한 최적의 이동 루트 및 최적의 송풍 강도, 각도, 방향, 시간 등의 제어가 가능한 이동식 환풍 장치에 관한 것으로서, 적재물 보관 장소 내부의 가스를 환풍구 방향으로 유도하는 이동식 환풍 장치에 있어서, 이동 바퀴； 상기 이동 바퀴의 축이 설치되고 상기 축에 구동력을 제공하는 몸체부； 상기 몸체부에 장착되어 가스의 농도를 측정하는 가스 측정 센서； 상기 몸체부에 장착되어 상기 몸체와 상기 적재물
