Abstract: The definition, classification, wall effects and characterization of environmental smog chambers were simply summarized, and their application researches were reviewed. It is indicated that the main material of foreign environmental smog chambers was Teflon FEP; the indoor chamber with relatively smaller volume had powerfully controlling ability of simulated conditions including light intensity, temperature and relative humidity; while the outdoor chamber with relatively larger volume was on the contrary which could fully use sun light. Most smog chambers of single function with advanced instruments such as laser induce fluorescence (LIF) were unremovable, nor applied to carry out simulated research aiming at concrete areas and nor adapted to the researches on human exposure and emission theory of decorative building materials; Applying smog chamber, the researches on photochemical smog mechanism theory, secondary organic aerosol and atmospherically chemical behavior of newly added trace gases were done. Therefore, the future environmental smoke chambers require not only the mobility in order to be suitable for indoor and outdoor atmospheric chemistry simulating experiment, but also the comprehensive functions to simulate the photochemical reaction mechanism and to research the air pollution and effects on human health to meet China carrying out researches on comprehensive simulation of atmospheric chemistry, strengthening haze, ozone formation mechanism, relationship between atmospheric pollution and population health.