Methane emissions from constructed wetlands(CWs)contribute to global warming. This study aimed to investigate the effect of glucose addition in CWs on methane emission. Field monitoring and the dynamic model analysis were used to investigate the effect of adding different glucose concentrations as carbon sources on methane emission, TN degradation, and COD degradation in an integrated vertical-flow constructed wetland(IVCW)system composed of five layers filled with different materials. When glucose concentrations of 0.5 mmol/L, 1.0 mmol/L, 2.0 mmol/L, and 4.0 mmol/L were added separately into the IVCW, results showed that:(1)methane emission from IVCW was 4.0 mol m~(-2)d~(-1), 3.5 mol m~(-2)d~(-1), 3.9 mol m~(-2)d~(-1), and 3.4 mol m~(-2)d~(-1), respectively, increasing by 27.0%, 12.0%, 24.0%, and 9.8%, respectively, compared with the blank experiment.(2)Accordingly, methane emissions from the Cyperus alternifolius L. stem-leaf system in the IVCW were 0.9 mol m~(-2)d-1, 1.6 mol m~(-2)d~(-1), 1.5 mol m~(-2)d~(-1), and 0.7 mol m~(-2)d~(-1), respectively, and were higher than those from the C. alternifolius L. root-water in the IVCW system.(3)Average carbon utilization rates in the IVCW were 32.17%, 52.28%, 76.86%, and 76.72%, respectively, with corresponding average TN removal rates of 37.30%, 11.14%, 14.79%, and 48.75% and average COD removal rates of 70.00%, 91.10%, 98.78%, and 92.31%, respectively.(4)Furthermore, it was found that methane emissions driven by adding glucose in the IVCW was considered as the second-order dynamic kinetic model with methane kinetic constant of 49.64 mg/h. With the average methane emissions increasing by 18.2%, methane emissions driven by adding glucose in the IVCW was considered to be high, which can help to understand the relationship between methane emissions from CWs and carbon source.