Wearable biopotential sensing devices are essential to long-term and real-time monitoring of human health.Non-contact,capacitive sensing electrodes prevent potential skin irritations,and are thus beneficial for long-term monitoring.Existing capacitive electrodes are either connected to a separate control circuit via external wires or have limited sensing capacitances,which leads to low signal qualities.This study demonstrates a stretchable capacitive sensing device with integrated electrodes and control electronics,with enhanced signal qualities.The electrodes and the control electronics are fabricated on a common fabric substrate for breathability and strain-limiting protection.The stretchable electrodes are based on an island-bridge design with a stretchability as high as ～ 100％,and an area ratio as high as ～ 80％.By using a dielectric calcium copper titanate (CCTO) composite as the adhesive layer,the electrode capacitance can be increased,yielding an enhanced signal-to-noise ratio (SNR) in the acquired biopotentials.This device offers a convenient and comfortable approach for long-term non-contact monitoring of biopotential signals.