The invention discloses a working method of a sleeping and 
metal consultation application, a device and a 
system, wherein the working method, the device and the 
system belong to the field of problem consultation, ECG and 
EEG monitoring. The working method comprises the steps of acquiring and determining an operation instruction selected by a 
consumer, if ordering is determined, acquiring a sleeping problem and 
metal consultation which are input by the 
consumer and selecting a consultant for answering the problem, generating a common order according to the sleeping problem, the 
metal consultation and the consultant, and transmitting to a consultation platform, and displaying a feedback result when the feedback result is received; if physiological index monitoring is determined, establishingconnection with 
physiological monitoring equipment, acquiring and storing the 
physiological monitoring data which are monitored by the 
physiological monitoring equipment; and if instant consultationis determined, acquiring the sleeping problem and the metal consultation which are input by the 
consumer, on the condition that the physiological 
monitoring data exist, generating an instant order according to the sleeping problem, the metal consultation and the physiological 
monitoring data, and transmitting to the consultation platform, and when a consultant order receiving feedback is received,establishing instant communication with the consultant.