Portable cardiopulmonary function monitoring device and system in motion state

A portable cardiopulmonary function monitoring device and system in a motion state relates to the technical field of cardiopulmonary function monitoring, and comprises a host, a fixing assembly, a fixing band assembly and a portable cardiopulmonary function monitoring system in a motion state, an existing fixing band is improved, a buffer block and a pressure sensor are added, and when a user wears the portable cardiopulmonary function monitoring device and system in the motion state, the portable cardiopulmonary function monitoring device and system in the motion state can be monitored. The tightness between the fixing band and the waist is kept, the situation that due to the fact that the fixing band is loosened to drive the electrocardio lead wire and the blood oxygen probe to be pulled, detection data are not accurate is avoided, meanwhile, ventilation of the attached portion is kept, the comfort degree is improved, meanwhile, in the heart and lung data collecting process of a user, invalid data are scree