表述了包含钠２４个磁子能级的原子在一维σ＋－σ－冷却光和再抽运光中各磁子能级粒子分布随时间变化的公式及多普勒冷却力。计算并讨论了不同冷却光失谐情况、不同再抽运光强和失谐情况下原子的多普勒冷却力和基态的上能级粒子数占基态总粒子数的比例Ｐ（ｖ）随速度的变化。该模型的计算结果能解释在磁光陷阱（ＭＯＴ）实验中的现象和作为磁光陷阱实验选择参数时的参考。 The formulas of Doppler coercivity and particle distribution of each magnetic energy level particle in one-dimensional σ + -σ-cooling and re-pumping light of atoms containing 24 magnetic sub-states of sodium are described. The effects of different cooling light detuning conditions, the Doppler cooling force and the ratio of the upper ground state particle number to the total ground state total particle number (P (v)) of the atom under different resurgence light intensities and detuning conditions are calculated and discussed. The change. The calculation results of this model can explain the phenomena in the magneto-optical trap (MOT) experiment and reference when choosing the parameters of the magneto-optical trap experiment.