The slope improvement in a small watershed is a problem of mult-iattribute decision-making . However,the decision-making is often a subjective judgment due to lack of information, which largely depends on the exper-ience of decision makers. Several mult-iattribute decision-making methods are presented to deal with decision problems in slope improvement of the Haixihai watershed under incomplete information and the arbitrary decision by a single method. Constructing woodlands and building level terraces are the most suitable measures for local slope improvement. The result provides the local decision makers with a scientific support in their decision-making