In[322]:= fanwei = {x, 0, 20, 0.1};
Table[x, fanwei]
\:6B63\:5728\:8BA1\:7B97In[322]:= Table::nliter: Non-list iterator fanwei at position 2 does not evaluate to a real numeric value.
Out[323]= Table[x, fanwei]

Table[x, Evaluate@fanwei]