Abstract: Most of reservoirs on chief rivers in Guangdong are in river channel type,and environmental engineering geological problems hold the balance for these types of reservoirs .As the evaluation methods in code or handbook are not Suitable for these problems, the evaluation methods need to be modified urgently.With the strengthening of human activity,more new geological problems on water conservancy environment are being exposed,and with the increasing of human's environmental consciousness,more and more geological problems on water conservancy environment will be discovered. Being reformed as corporations, engineering geological units in water conservancy will be restricted to go on environmental geology study,so cooperation needs to be discussed.