In order to understand the contamination situation and characteristics of volatile halogenated hydrocarbon (VHH) in groundwater of main cities, namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />China, the investigation and research on VHH contamination from groundwater in 69 cities of China were carried out. The results showed that at least one kind of VHHs could be detected in 406 groundwater samples, and the detection ratio of the samples to the 791 groundwater samples was 51.33%; the detection ratio for chloroform was highest (20.35%) among the VHHs, and the ratios for other VHHs were 0.25%~5.06%; no chloroethylene was detected in all the samples.