CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt" lang=EN-US>The excessive mining of confined water in a long period causes the continuous decline of groundwater levels in ace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />ace w:st="on">aceName w:st="on">DaqingaceName> aceType w:st="on">CityaceType>ace>, forming the groundwater conical depression. Based on survey data, the main geological environment problems in ace w:st="on">aceName w:st="on">DaqingaceName> aceType w:st="on">CityaceType>ace> are analyzed. To deal with the groundwater cone of depression, land subsidence, water-type endemic disease, land salinization, lake pollution and other environmental geological problems, the countermeasures are put forward.