（1）引用宏变量要加&
%fuzhi(name=&maValue);

(2)在macro fuzhi里面定义的宏变量是local的不能在宏外面引用，如果要在外面用可以用global定义全局宏变量
在macro内部count1是可以被解析的


%macro fuzhi(name=maValue);
%do i=1 %to 4;
   %if %scan(&name,&i," ") NE " " %then %do;
   %let count&i.=%scan(&name,&i," ");
   %put &&count&i;
   %put *************;
   %end;
%end;

%put %%%%%%%%%%%%%;
%put &count1;
%put %%%%%%%%%%%%%;

%mend;

%fuzhi(name=&maValue);

*使用global，但是使用global一定要慎重，容易出错;
%macro fuzhi2(name=maValue);
%do i=1 %to 4;
   %if %scan(&name,&i," ") NE " " %then %do;
   %global count&i  ;
   %let count&i.=%scan(&name,&i," ");
   %end;
%end;
%mend;

%fuzhi2(name=&maValue);
%put &count1;

Thank you very much