We present a novel cluster-seven-core photonic crystal fiber which possesses high nonlinearity and supports the high-power pumping.Its nonlinearity coefficient and effective mode area are calculated by the full vector multipole method.Compared with the single core PCF,the cluster-seven-core photonic crystal fiber can support high-power beam transmitting in the core,and simultaneously has high nonlinearity.This kind of photonic crystal fiber can be applied to the photoelectron-device field.