Abstract: Though the scientific discovery is supported by both rational thought and irrational thought, many people turn the back to these so-called irrational thoughts. The scientific study will be greatly hurt if we can keep the balance between these two when we are doing our studies. We strongly believe that we should pay more attention to this two kinds of thoughts and do further studies in the field in order to make better use of them. This belief can be firmly held when we put our sights into so many great scientific discovery events in the history.