In this paper, we consider a class of finitely degenerate coupled parabolic systems. At high initial energy level $ J(u_{0}) > d $, we present a new sufficient condition to describe the global existence and nonexistence of solutions for problem (1)-(4) respectively. Moreover, by applying the Levine's concavity method, we give some affirmative answers to finite time blow up of solutions at arbitrary positive initial energy $ J(u_{0}) > 0 $, including the estimate of upper bound of blowup time.
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