A bed includes: a bed body having a space for a user to rest； a monitoring device connected to the bed body, the monitoring device including a pressure detecting mechanism, a signal processing unit electrically coupled to the pressure detecting mechanism, and a monitoring unit electrically coupled to the signal processing unit. The pressure detecting mechanism is configured to detect pressure variations of the bed body, generate pressure data, and transmit the pressure data to the signal processing unit. The signal processing unit is configured to process the pressure data and generate processed signal data. The monitoring unit is configured to monitor the processed signal data.
