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2015): Gradient blowup rate for a heat equation with general gradient nonlinearity, Applicable Analysis, This paper is focused on the gradient blowup rate for the following general semilinear parabolic equationwith being a smoothly bounded domain in R N and F : [0, +∞) → R being a smooth function. Under some suitable assumptions on F, we establish the gradient blowup rate lower bound by the rescaling method for any N ≥ 1. While the upper bound which is established by the comparison method can be obtained only for N = 1. At last, we provide some specific examples to verify our results.