The present invention relates to a negative ion generator installed on the frame of a baby carriage with a bracket. The negative ion generator includes: a body which includes a bracket connection unit for being connected to the bracket in an integrated or detachable manner while having an outlet for discharging negative ions； a negative ion generation module installed to generate the negative ions in the body； a blower fan which is installed on the body to provide a blowing force in order to discharge the generated negative ions from the negative ion generation module through the outlet； an adjustment unit arranged to be exposed from the body unit； a sensing unit which is installed to sense harmful noxious sources around the body unit or in the body unit； a control unit which is installed in the body to control the operation of the blower fan and the negative ion generation module in accordance with the adjustment operation of the adjustment unit as well as transmitting the sensing result from the sensing unit to a mobile phone through wired or wireless communication； and a battery which is arranged in the body to supply power needed for the operations of the negative ion generation module, blower fan, sensing unit, and control unit. According to the present invention, the negative ion generator can be detachably installed on the baby carriage to provide a beneficial negative ion environment for babies therein and senses the noxious sources regarding the microparticle concentration rate, UV ray strength, temperature, humidity, and volatile organic compound (VOC) amount in order to provide the sensing information to a mobile phone of a user, thereby enabling the user to take appropriate measure accordingly.본 발명은 유모차의 프레임에 브라켓으로 설치되는 음이온 발생기로서, 상기 브라켓에 일체 또는 착탈 가능하게 연결되기 위한 브라켓연결부가 마련되고, 음이온의 방출을 위한 방출구가 마련되는 본체； 상기 본체 내에 음이온을 발생시키도록 설치되는 음이온발생모듈； 상기 음이온발생모듈로부터 발생되는 음이온이 방출구를 통해서 방출되도록 송풍력을 제공하기 위해 본체 내에 설치되는 송풍팬； 상기 본체로부터 노출되도록 마련되는 조작부； 상기 본체 내에 주변의 유해 요인 또는 유해 유발 요
