Abstract: In order to solve problems that portable smog analyzer based on electrochemical sensor has poor flexibility and universality, and portable optical fiber smog analyzer can not achieve data remote transmission and multi-sensor networking, a novel mine-used portable smog analyzer with networking function was designed. Monitoring and analysis circuit for smog was designed based on AvaSpec-2048 in order to detect smog concentration. Networking function of the analyzer was realized by embedded development technology and ZigBee wireless network technology. The test results showed that the analyzer has characteristics of stable and reliable working, fast response, strong networking capability, which can well meet with requirements of distributed multi-instrument monitoring.