**4. Conclusion**

Traditional temperature sensors are widely used in various fields due to their simple structure, low manufacturing cost, and high stability. However, they face limitations in complex and harsh environments, which are prevalent today. This paper highlights several types of advanced temperature sensors that offer unique advantages and applications compared to traditional sensors. Different temperature sensors are used for varying extreme application scenarios such as acoustic temperature sensors for high-temperature boilers, fiber optic temperature sensors for long-distance cable lines, nondestructive temperature measurement of human tissues, and micro and nanoscale temperature sensors for microstructure environments. Most of the new temperature sensors feature contactless measurement and remote control.

In addition, based on the complexity of multi-temperature measurement, temperature resolution is no longer the only criterion for judging the performance of temperature measurement. For different application scenarios, people pursue different advantages of temperature sensors, spatial resolution, signal-noise rate, and response time, which have become the key information we also need to focus on in today's temperature measurement process.
