data tmp;
  input id name $20.;
datalines;
1 stkkkkk
2 dd
;
data togetridof_st;
  set tmp;
  where name not contains 'st';
run;

O(∩_∩)O谢谢

我是用这种笨方法做的  也得到了想要的结果~       
        if substr (Name,1,2)="ST" OR substr (Name,1,2)= "PT"  then delete;
        if substr(Name,1,3)="*ST" OR substr(Name,1,3)= "GST" OR substr(Name,1,3)="SST"  then delete;
        if substr(Name,1,4)="S*ST" OR substr(Name,1,4)="G*ST"  then delete;

drop if strcmp("ST")