Abstract: The cross sections of 92Mo(n,p)92Nbm, reaction are measured relatively to standard reactions using activation method, In neutron energy range from 5.to 19 MeV. The influence of low energy neutrons is considered very carefully in the whole measurement, and effective methods are used to deduct their interference. Especially in 17-19 MeV range, the empty tritium target is irradiated to subtract the influence of D-d neutrons from self-building D target, and a reasonable cross section tendency is obtained. A comparison is made between the present results and the published data.