1989年,我的大学同学王琨同志曾思考Fermat问题,在思考过程中,他曾提出一条猜想,不久后我证明了他的猜想,原来打算等他证明了Fermat大定理后一起发表,最近他表示证不了Fermat大定理,建议我把我的证明单独发表如下.猜想若正整数a为奇,b为偶,并且(a,b)=1(指a,b互素).则对任何正整 In 1989, my college classmate, Comrade Wang Xi, had thought about Fermat’s problem. In the process of thinking, he had proposed a conjecture. I proved his conjecture shortly afterwards, and he intended to wait until he proved Fermat’s Theorem and published it together. Recently, he Cannot prove Fermat’s Big Theorem. I suggest that I present my proof separately as follows. Conjecture that if the positive integer a is odd, b is even, and (a,b) = 1 (referring to a, b), then any positive whole