Introduction The adoption of the nuclear model becomes even more important, since the secondary particle energy spectra of each reaction channels are only given by the calculation in the data files. The intercomparison between the large data files has been performed, there are systematical deviations in the secondary neutron emission spectra of(n,2n), (n,nα), etc. and their total neutron emission spectra. A typical example is shown in Fig. 1 for Ni at 14.1 MeV, in which the low energy neutrons(less than several kev) have higher values in ENDF/B-6, then in order JENDL-3, BROND-2, while are missed and have a strong peak at several ten keV, but lower values occur at high energy region in Introduction The adoption of the nuclear model becomes even more important, since the secondary particle energy spectra of each reaction channels are only given by the calculation in the data files. The intercomparison between the large data files has been performed, there are systematical deviations in the secondary neutron emission spectra of (n, 2n), (n, nα), etc. and their total neutron emission spectra. A typical example is shown in Fig. 1 for Ni at 14.1 MeV, in which the low energy neutrons (less than several kev) have higher values ​​in ENDF / B-6, then in order JENDL-3, BROND-2, while are missed and have a strong peak at several ten keV, but lower values ​​occur at high energy region in