Research conclusions：(1) The work of assessment of the geological disasters risk should be done well in the stage of the project plan so as to clearly know the current and latent geological disasters risk. (2) The work of assessment of the geological disasters risk should be done for both risks of the sudden happening geological disaster and slow change geological disaster. (3) The identification and analyses should be made for the existing risk and assessed risk, and the danger classes and dange scale of different types of disaster should be defined and assessed with quantum molecular identification method. Meanwhile the rational measures for prevention of the different disasters should be proposed.