在中能重离子反应中出射的Ｅｎ＞２０ＭｅＶ中子在出射总中子中占有相当大的比例，因此，当用雷姆计测量剂量当量时，由于仪器的能量响应，雷姆计的直接读数低于真实的中子剂量当量值，本文从重离子反应出射中子能谱入手，理论上计算了在屏蔽墙内用１０ｉｎ，直径单球雷姆计和标准Ａ－Ｂ雷姆计测量４１．７ＭｅＶ／ｕ１２Ｃ＋Ｆ３和１００ＭｅＶ／ｕ１２Ｃ＋Ｃ反应出射中子剂量当量的修正因子。它可以近似应用于中能重离子反应出射中子的剂量当量测量。 En> 20 MeV neutrons exiting the medium-energy heavy ion reaction account for a significant proportion of exiting total neutrons, and therefore, when measuring the dose equivalents with a Reichsmeter, the direct reading of the Reichstron due to the energy response of the instrument Below the true equivalent neutron dose equivalence, this article starts with the heavy ion reaction exiting neutron energy spectrum, and theoretically calculated in a shielded wall using a 10-inch diameter single-ball ream and a standard A-B remem- ber. 7MeV / u12C + F3 and 100MeV / u12C + C reaction neutron dose equivalent correction factor. It can be approximately applied to the dose equivalent measurement of neutron emitted by the heavy ion reaction.