The invention discloses a flexible wearable sleep physiological parameter detection method and device. Conventional sleep 
respiration detection is not combined with 
heart rate and blood 
oxygen. The flexible wearable sleep physiological parameter detection device comprises a 
heart rate and blood 
oxygen detection module, a temperature and 
moisture detection module and assorted 
mobile phone terminal 
software, wherein the 
heart rate and blood 
oxygen detection module and the temperature and 
moisture detection module can support 
bluetooth 5.0; and the 
mobile phone terminal 
software is used for receiving the temperature, the 
moisture, the reflection 
infrared light data and the reflection 
infrared light data, detecting the 
respiration situation, performing filtering on the reflection 
infrared light data, performing peak seeking, performing calculation to obtain the heart rate value, performing FFT alternation on the reflection infrared light data and the reflection infrared light data, and obtaining the 
blood oxygen concentration value combined with a Beer-Lambert Model. The flexible wearable sleep physiological parameter detection method and device disclosed by the invention also support a manner that the data is stored, and the CSV formatted file is transmitted out for secondary research. The flexible wearable sleep physiological parameter detection device disclosed by the invention is integrated on a flexible circuit board, and is stuck to the 
skin below the 
nose, so that the wearing is convenient; and the flexible wearable sleep physiological parameter detection device has very low active RF and MCU 
electric current, is low in power dissipation, and is suitable for long-time monitoring.