Abstract: The evaluation of loess collapsibility in engineering is confine to the concept of collapse settlement,and the evaluation of collapsible sensibility is not involved in previous research.The evaluation of collapsible sensibility is still at the exploratory stage.Although studies and discussions,as well as numerous evaluation methods have been presented by many scholars,thereis no consensus of opinion proposed,and no unified standard of quantitative evaluation on the collapsible sensibility provided.Based on a large number of engineering practice data,and on the premise of no increasing amount of tests,a new evaluation method of the loess collapsible sensibility and loess foundation collapsible sensibility is presented,and the corresponding quantitative evaluation standard is provided.The method is simple and feasible,and easy to beapplied in engineering.This method has been proved to be effective by practice.Even so,this method still needs to be further improved in engineering practice.