The invention discloses electronic cold-hot monitoring and warning equipment and an electronic cold-hot monitoring and warning method, and belongs to the field of temperature monitoring. The electronic cold-hot monitoring and warning equipment comprises a temperature sensor, a built-in loudspeaker, a built-in power supply, a green light-emitting diode (LED) indicating lamp, a red LED indicating lamp, touch buttons, an intelligent computing chip (10), a music integrated circuit (IC) (11), a wireless transmitting module (12), wireless receiving equipment (19), a female terminal (7), a male plug (8), a conducting wire and the like, wherein the temperature sensor transmits temperature data back; the temperature data is subjected to computing by the intelligent computing chip (10); when the temperature exceeds a set value, the intelligent computing chip obtains music from the music IC, and sends an alarm to a keeper through the loudspeaker and the LED indicating lamps; and when the wireless transmitting module and the wireless receiving equipment are turned on, the wireless receiving equipment sends an alarm to the keeper through the loudspeaker and the LED indicating lamps so as to remind the keeper to increase or decrease clothes or change the environment temperature according to a specific warning mode, so that the body temperature and the health of a person under guardianship are normally kept and then the person under guardianship is fully protected.