A system for measuring microfluctuation of accommodation includes a measurement module and a processing module. The measurement module includes at least one first sensing element which is attached around eyes of a subject to measure EMG signal. The processing module is coupled with the measurement module and configured for capturing a specific frequency range of the EMG signal as a measurement indicator of microfluctuation of accommodation, wherein the specific frequency range is between 0.1 Hz to 100 Hz. The above-mentioned system allows the subject to be measured in an open field of vision to avoid muscle around the eyes of the subject fatigue, and the volume is relatively small for carrying. A method for measuring microfluctuation of accommodation is also disclosed.一種視調節微波動之量測系統包含一量測模組以及一處理模組。量測模組包含至少一第一感測元件,其用以貼附於一受測者之眼睛周圍,以量測一肌電圖訊號。處理模組與量測模組耦合。處理模組用以擷取一特定頻率範圍之肌電圖訊號作為視調節微波動之一量測指標,其中特定頻率範圍為0.1 Hz至100 Hz。上述量測系統可讓受測者在開放視野下進行量測,以避免受測者眼睛周圍之肌肉產生疲勞,且體積相對較小而有利於攜帶。同時亦揭示一種視調節微波動之量測方法。10‧‧‧量測模組11‧‧‧第一感測元件12‧‧‧第二感測元件20‧‧‧處理模組30‧‧‧無線通訊模組31‧‧‧無線傳送單元32‧‧‧無線接收單元40‧‧‧儲存模組50‧‧‧分析單元