Anaerobic digestion of Chinese cabbage waste was investigated through a pilot-scale two-stage digester at a mesophilic temperature of 37 °C. In the acidification digester, the main product was acetic acid, with the maximum concentration of 4289 mg·L-1on the fourth day, accounting for 50.32% of total volatile fatty acids. The oxidation reduction potential(ORP) and NH+4-N level decreased gradually with hydraulic retention time(HRT)of acidification. In the second digestion phase, the maximum methanogenic bacterial concentration reached9.6 × 1010ml-1at the organic loading rate(OLR) of 3.5–4 kg VS·m-3, with corresponding HRT of 12–16 days.Accordingly, the optimal biogas production was 0.62 m3·(kg VS)-1, with methane content of 65%–68%. ORP and NH+4-N levels in the methanizer remained between- 500 and- 560 m V and 2000–4500 mg·L-1, respectively. Methanococcus and Methanosarcina served as the main methanogens in the anaerobic digester. Anaerobic digestion of Chinese cabbage waste was investigated through a pilot-scale two-stage digester at a mesophilic temperature of 37 ° C. In the acidification digester, the main product was acetic acid with the maximum concentration of 4289 mg · L-1on the Fourth day, accounting for 50.32% of total volatile fatty acids. The oxidation reduction potential (ORP) and NH + 4-N level changed gradually with hydraulic retention time (HRT) of acidification. In the second digestion phase, the maximum methanogenic bacterial concentration reached9.6 × 1010 ml-1at the organic loading rate (OLR) of 3.5-4 kg VS · m-3, with corresponding HRT of 12-16 days. According to the optimal biogas production was 0.62 m3 · (kg VS) -1 , with methane content of 65% -68%. ORP and NH + 4-N levels in the methanizer were between- 500 and- 560 mV and 2000-4500 mg · L -1, respectively. Methanococcus and Methanosarcina served as the main methanogens in the anaerobic digester