The invention relates to a safe body temperature monitoring device, including a main body and a measuring device. A retracting and releasing mechanism and a wiping mechanism are also included, whereinthe retracting mechanism comprises a rotating shaft, a knob, an opening, a reel, a moving block, two elastic ropes, two connecting lines, two guiding rings and two limiting components. The wiping mechanism includes a driving assembly, a ring gear, a rotating sleeve, two second connecting rods, two connecting sleeves, two first connecting rods, two first springs, two connecting plates and two sponge blocks. The limiting component includes a connecting hole, a second spring, a limiting rod and a groove. The retracting and releasing mechanism drives the measuring device to move left and right,thereby realizing the retracting and releasing of the measuring device, thereby reducing the probability of damage to the thermometer, and the wiping mechanism drives two sponge blocks to rotate around the measuring device, thereby sterilizing the measuring device through the sponge blocks, thereby improving the safety of the thermometer.