A state determination apparatus for a care-receiver is provided, comprising: a communication unit and a protective unit. The communication unit includes at least one first antenna module and a first wireless communication module. The protective unit is configured for accommodating the communication unit and buffering external pressure on the communication unit to protect the communication unit. The state determination apparatus is configured for being disposed on a back of a cushion. The first wireless communication module sends a detection signal through at least the first antenna module so as to communicate with a radio frequency identity (RFID) tag used by the care-receiver. After sending the detection signal, the communication unit determines whether a response signal from the RFID tag is received or information of the response signal is read so as to determine a state of the care-receiver.
