A contactless drunken driving judgment system includes an image capturing module configured to obtain multiple images associated with a subject； a physiological parameter computing module coupled to the image capturing module, and configured to generate at least one physiological parameter according to the multiple images associated with the subject, wherein the at least one physiological parameter comprises at least one of a Remote PhotoPlethysmoGraphy, a heart rate, a heart rate variability, a blood oxygen, a breath rate, and a blood pressure； and a alcohol detection calculation unit coupled to the physiological parameter computing module, and configured to generate a drunken driving judgment result according to the at least one physiological parameter to indicate whether the subject is drunken.一種非接觸式酒駕評判系統，包含一影像擷取模組，用來獲得多張相關於一受測者之影像；一生理參數計算模組，耦接於該影像擷取模組，用來根據該多張相關於一受測者之影像，產生至少一生理參數，其中該至少一生理參數包含一遠程光體積變化描記、一心率、一心律變異、一血氧、一呼吸速率和一血壓中的至少一者；以及一酒精偵測運算單元，耦接於該生理參數計算模組，用來根據該至少一生理參數，產生一酒駕判斷結果，以指示該受測者是否酒駕。
