A detachable probe mounting arrangement includes a thermometer body, a probe, a coupling structure adapted to connect the probe to the thermometer body, the coupling structure comprising a fist connector fixedly provided at a front side of the thermometer body, a second connector fixedly provided at a rear side of the probe and adapted to connect said probe to the first connector, first contact means provided in the first connector, and second contact means provided in the second connector and adapted to contact the first contact means for transmitting temperature detection signal from the probe to the thermometer body for display on display means on the thermometer body. The connection between the first connector and the second connector can be achieved by a plug joint or screw joint.