Abstract: There are many methods that evaluate and predicate the therapeutic effects of tumors, including physical examination, common imaging (X-ray, CT, MRI etc) and tumor marker etc. But these methods have many limits, for example:more subjective, less sensitivity etc. The relative biological features as angiogenesis, apoptosis, hypoxic and proliferation can be reflected by PET early and correctly. So, we can diagnose tumor, predict and evaluate its therapeutic effects by PET used the accorded tracers that reflect the above biological features. Helping clinical doctors to make therapeutic methods.