Abstract:With the rapid development of economy and society, environmental pollution especially haze and toxic gases pollution do great harm to people's health and are getting more and more serious. Thus the demands for environment information, such as PM2.5, temperature, and humidity, and all kinds of gas concentration monitoring are becoming higher and higher. Therefore, it is of great significance to develop and design an environment monitoring data collection system with various functions, high reliability, and good portability. The study uses sensor and embedded technologies to design a new kind of portable comprehensive environmental monitoring data acquisition system. The experimental results and error analysis show that the data acquisition system can realize real-time data collection and display function, and ensure the credibility of system data, indoor environment monitoring, coal gas, natural gas, and toxic gas monitoring.