The invention relates to a choroidal sensing device, which carries a sensing patch through a pressure control mechanism to sense a portion of an arm of a subject to be tested, thereby sensing a pulse beat. At the same time, the sensing patch can be a disposable design, thus avoiding the hygienic problems caused by the repeated use of the sensing patch.本發明有關於一種脈絡感測裝置,其透過一壓力控制機構承載一感測貼片,以對一待測者之一手臂的一寸關尺待測部位進行感測,進而感測脈絡搏動。同時感測貼片更可為拋棄式設計,因而避免重複使用該感測貼片所衍生之衛生問題。