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This paper lies on investigating the seismic response of the normal moment frames undergoing near-field records (NFR) with pulses.We reveal that the response values of NFR distribute as the lognormal mode and we also get the mean value and the dispersion of them.As we know, the relation between the fundamental period T1 of structure and the pulse period Tp has significant effect on the seismic response, especially on the vertical distribution of inter-storey drift ratio.[1] We divide the structures into groups as the one of TP> T1 and another of TP< T1.So the response of structures under NFR different TP will be observed here.respectively.