Curve equations were established to simulate the survival rate of ,B.trispora, (−) implanted by N,+, of different energy, and the survival-dose effect model was built. The results showed that the survival-dose of the three energies types fitted the GCAS curve trend with the coefficients of determination (,R,2,) over 0.9834. With them, the "saddle shape" survival rate curve of ,B.trispora, (−) implanted by N,+, was well explained. The survival-dose effect model of ,B.trispora, (−) implanted by low energy N,+, was useful to the ,B.trispora, (-) mutation breeding work, and was significant for other fungi as reference.