The traditional constructed wetland is considered to have a low natural oxygen enrichment rate and low removal efficiency of N and P nutrients. Therefore, a micro-aerated constructed wetland was designed and developed to enhance the removal of C, N and P from domestic sewage in constructed wetlands. By changing the aeration amount (gas-water ratio) and detecting the effect of the constructed wetland on domestic sewage treatment under different temperature conditions, the COD, TP and various nitrogen pollutants along the system in the artificial wetland enhanced by the micro-aeration system were analyzed in detail. The results show that the micro-aeration system can significantly enhance the treatment effect of wetland on domestic sewage. With the gas-water ratio rising from 0:1 to 4:1, the COD and TP removal rate in the wetland increased from80% and 60% to 93%and 79%. TN removal rate decreased after reaching the top of 75% at gas-water ratio of 3:1 condition. The low temperature also shows a great impact on the removal of carbon and nitrogen. Compared with high temperature, the remove rate of COD and TN decreased by 7%and8% in the low temperature. The change of pollutantconcentration along the wetland shows that the removal process of pollutants mainly occurs in the second wetland system.