Conventionally, a breathing assistance device applied to continuous positive airway positive pressure respiratory therapy and the like has a disadvantage that an air tube for supplying pressurized air is long and difficult to handle, and sleepiness is hindered because the degree of freedom of the head is deprived . The present invention relates to a breathing assistance device suitable for continuous autonomous positive pressure respiratory therapy, comprising: a blower device having a blower for generating pressurized air an operation device having an operation interface for controlling the blower A wireless or wired communication means for connecting the blower device and the operation device, a mounting portion attached to the head of the patient to supply the pressurized air to the airway of the patient, an attachment portion for attaching the pressurized air And an air tube that guides the blower device to the mounting portion, wherein the blower device is housed in a casing for a blower device, the operation device is accommodated in an operation device casing separated from the blower device casing A breathing assistance device is provided.従来、持続的自動気道陽圧式呼吸療法等に適用される呼吸補助装置は、加圧空気を供給するエアチューブが長く取り扱いにくく、頭部の自由度が奪われるため眠りを妨げられる欠点があった。本発明は、持続的自動気道陽圧式呼吸療法に好適な呼吸補助装置であって、加圧空気を生成する送風機を備えたブロア装置と、前記送風機を制御する操作用インターフェースを備えた操作装置と、前記ブロア装置と前記操作装置を接続する無線または有線の通信手段と、患者の頭部に装着して患者の気道に前記加圧空気を供給する装着部と、前記ブロア装置から前記加圧空気を前記装着部に導くエアチューブとを備え、前記ブロア装置は、ブロア装置用筐体に収納され、前記操作装置は、前記ブロア装置用筐体とは分離された操作装置用筐体に収納されることを特徴とする呼吸補助装置を提供する。