The global existence and blow-up in finite time problems of solutions to a class of a parabolic equations cross coupled terms are studied.By using comparison principle and the upper-lower solution method,the sufficient conditions for the global existence and blow-up in finite time of solution to the fully coupled by power function and logarithmic function degenerate parabolic equations are established.%研究了一类交叉耦合抛物型方程组解的整体存在及爆破问题.首先构造方程组的上、下解,再利用比较定理,得到由幂函数和对数函数完全耦合的退化抛物型方程组解的整体存在及解在有限时刻爆破的充分条件.
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