在液氮温度下,测定了均匀Fe_3O_4胶体粒子制备过程中陈化时间为1小时内的不同时间所得样品的Μssbauer谱,结果表明,γ-FeOOH为Fe_3O_4均匀胶粒形成过程的中间产物,并提出均匀Fe_3O_4胶粒的形成机理为: At liquid nitrogen temperature, the Μssbauer spectra of the samples obtained at different time during the aging time of Fe 3 O 4 colloidal particles were determined. The results show that γ-FeOOH is the intermediate product of Fe 3 O 4 uniform micelle formation, And the formation mechanism of uniform Fe 3 O 4 micelles is proposed as follows: