Objective Through analyzing the monitoring results of several laboratory animal facilities to discuss more appropriate parameters of scientific and actual environmental indicators.Methods\ The relative environmental indicators were tested according to the National Standards for Laboratory Animal Environment and Facility(GB 14925-2001).Results\ The results showed the air exchange rate,the air borne bacteria,temperature and relative humidity,noise,pressure gradient,work-illumination were consistent with the National Standards.However, regards some parameters,there are significant differences among different places within certain same facilities.The air cleanliness and pressure gradient were often key obstacles to meet the requirement of the national standard for barrier system.Conclusion\ To promote standardization of laboratory animal environment and facility in China,it suggests that standards of design and construction for laboratory animal facilities should be established as soon as possible,to reduce the difference between facilities or at different places in the same facility.The objective value,most suitable value and permit deviation should be taken into account when the national standard is revised in the future.