The present invention is an optical heart rate measuring automatic starting device, which comprises a housing, a control unit, a human body sensing component, and an optical heart rhythm sensor. The control unit is disposed in the housing, and one part of the human body sensing component and the optical rhythm sensor is disposed on the same side surface of the housing, and the other part is disposed in the housing, and is connected to the control unit, so that the human body sensing component and The optical rhythm sensor senses human skin on the same side surface of the housing, and the side of the housing with the human sensing component is placed against the human skin, and the optical heart rhythm sensor can be activated to generate heart rhythm information, and vice versa. Turning off the optical rhythm sensor stops generating heart rhythm information.本創作係一種光學心律量測自動啟動裝置，包括殼體、控制單元、人體感測元件、光學心律感測器。其中控制單元係設在殼體內，人體感測元件及光學心律感測器之一部分皆設在殼體同一側表面，另一部分則設在殼體內，並且連接到控制單元，使得人體感測元件及光學心律感測器在殼體的同側表面感測人體皮膚，而殼體設有人體感測元件的一側貼靠在人體皮膚，即可啟動光學心律感測器進而產生心律資訊，反之則關閉光學心律感測器停止產生心律資訊。
