options nosource;  * suppress SAS statements to the log;
options nosource2; * suppress print of macro files to the log;
options notes; * suppress all messages starting with NOTE;

But errors will still be printed out. You can also suppress all three by using:
options nosource nosource2 notes;

多谢！

Two methods for keeping log away:
1. Use Options:2. Export Log to external file(For checking errors):

学习了，非常感谢。

奥  原来还有这个问题啊