This paper designs an intelligent temperature measurement system based on AT89C52 single chip computer. The temperature is detected by digital temperature sensor DS18B20. DS18B20 collects and converts the temperature signal into data signal. Then the signal is analyzed and processed by single chip computer, and showed by LCD1602. Experimental result shows that the system can measure temperature with higher precision than traditional methods of temperature collection. Its detection accuracy can reach 0.1 . In addition, the system has advantages of adjusting overheat and prompting temperature upper and lower limits.