The most interesting part of the sensor is the flexible sensitive part and irregular curved surface, which is different from the conventional surface structure and provides positive inspiration for many medical devices. These necessary conditions have become welcome items for medical care. Body temperature detection is an indispensable element of flexible temperature sensor, which is a symbol of identity. I think that with its growing popularity, we should better understand its performance and use. The degree of temperature response and the sensitivity of temperature to external stimuli will affect the use of the sensor. In my opinion, its appearance must be able to better help mankind. The following text will explain the current development status of flexible temperature sensors one by one.