As the core sensing unit of medical electronic devices, the core components include medical-grade high-precision physiological sensor, electrocardiogram sensing element, blood oxygen detection chip, pressure sensor, temperature sensor and biological sensing element, etc. It can achieve non-invasive, real-time and accurate collection of human vital sign data such as heart rate, blood pressure, blood oxygen, body temperature, electrocardiogram waveform and respiratory rate, and at the same time meet the anti-interference requirements in medical environments, providing real and effective data support for clinical monitoring, health warning and chronic disease management. It is the core component of various medical monitors and portable health terminals.