Temperature sensor

The invention discloses a temperature sensor, and particularly relates to the field of temperature sensors, the temperature sensor comprises a floating mechanism, the bottom of the floating mechanism is rotatably connected with a second limiting mechanism used for limiting and fixing a temperature sensor transmission line and a sensing head part, the floating mechanism comprises a first floating plate, and a second floating plate is arranged in the first floating plate; a third floating plate is arranged in the second floating plate, connecting rods are rotationally installed at the horizontal center line positions of the first floating plate, the second floating plate and the third floating plate, a first supporting rod is fixedly installed at the top of the third floating plate, and a first limiting mechanism used for fixing a temperature sensor host part is slidably installed on the outer wall of the first supporting rod. According to the invention, the transmission line and the sensing head are partially