The Feature *Flexible sensing electrodes in wearable shirt to change tradtional Holter acquisition mode *Continuously removable monitoring by 4G and Internet transmission technology to transmit the ECG data timely. *Convenient for First Aid Center, hospitals, community medical centers, family wards etc to choose. *Multi-channels QRS detection and template classification *Atrial Fibrillation/Atrial Flutter detection and edit *Automatic pacemaker analysis *HRV/HRT analysis; Automatic arrhythmia and myocardial ischemia analysis *ST segment analysis *Obstructive sleep apnea syndrome analysis