Abstract: Disclosed are a single-pin wireless electronic thermometer and a charging device for the same. The single-pin wireless electronic thermometer includes a temperature measuring body with an inner cavity, and one end of the temperature measuring body is connected with an insertion part for inserting into food, a temperature sensor for detecting an internal temperature of the food is arranged inside at least the temperature measuring body or the insertion part, a temperature sensing portion of the temperature sensor is fitted to an inner wall of the temperature measuring body or an inner wall of the insertion part, and a control board is arranged in the inner cavity and connected to the temperature sensor. The single-pin wireless electronic thermometer of the present disclosure has a compact structure, with faster and more accurate heat conduction, so that the measuring effect may be improved.