The present invention communicates with a smartphone using a USB OTG (universal serial bus on-the-go) module and an MCU (Micro Controller Unit) installed in a smartphone interface device for phototherapy. The present invention also relates to a smart phone interface apparatus for light therapy that enables a light irradiation machine to be controlled and driven more stably. In the present invention, one side is connected to a light irradiation electrode, the other side is connected to a smart phone, and receives a light irradiation electrode control command generated by driving an application program installed in the smart phone to receive light. In the smart phone interface device for phototherapy that controls the driving of the electrode, the light irradiation electrode control command related to the light irradiation intensity, the light irradiation time, the light irradiation pattern, and the light irradiation start and end is received and received from the smart phone. MCU (micro controller unit) that generates a light source drive control signal based on a light irradiation electrode control command； connected to a connection connector and MCU for a smart phone, and communicates between the smart phone and the MCU using the smart phone as a host USB OTG (Universal Serial Bus On The Go) module； the voltage level that converts the voltage output from the smartphone Yureta； characterized in that it comprises a； beam irradiation driving unit for driving the light source by the received light source drive control signal from the MCU. [Selection] Figure 1【解決手段】本発明は、USB OTG(universal serial bus on-the-go)モジュールと光線治療用スマートホンインターフェース装置に設置されたMCU(Micro Controller Unit)を利用してスマートホンと通信を行って、より安定的に光線照射機を制御し駆動できるようにする光線治療用スマートホンインターフェース装置に関する。本発明は、一側は光線照射電極に連結され、他の一側はスマートホンに連結され、スマートホンに設置された応用プログラムの駆動によって生成された光線照射電極制御命令を受信して光線照射電極の駆動を制御する光線治療用スマートホンインターフェース装置において、スマートホンから、光線照射強さ、光線照射時間、光線照射パターン、光線照射開始と終了に関する光線照射電極制御命令を受信し、受信された光線照射電極制御命令により光源駆動制御信号を生成する、MCU(micro controller uni
