利用碘量法测定了ＳｒＦｅ_（１．５－ｘ）ＣＯ_ｘＯ_（３．２５＋δ）系列样品在不同温度下的金属平均价态，结合ＸＲＤ谱图研究了温度、钴含量对其结构、相组成的变化的影响规律。研究发现：随钻含量增加，体系由层状相过渡到钙钛矿相，并伴随有尖晶石相的出现。此外，由交流四端子法测量了ＳｒＦｅ_（１．５－ｘ）Ｃｏ_ｘＯ_（３．２５＋δ）系列样品的总电导率随钴含量的变化关系，总电导率随钻含量和温度的升高而增大，但对于钻含量较多的样品，电导率在～９００℃附近的较窄的温度范围内，出现一最大值。本文探讨了出现这一现象的可能原因。 The average valences of metals in SrFe_ (1.5-x) CO_xO_ (3.25 + δ) series samples at different temperatures were determined by iodometric method. The changes of structure and phase composition of the samples were investigated by XRD. The law of influence. It is found that the phase transition from the lamellar phase to the perovskite phase is accompanied by the presence of a spinel phase as the content of the diamond increases. In addition, the total conductivity of the SrFe_ (1.5-x) Co_xO_ (3.25 + δ) series of samples was measured by AC four-terminal method with the change of cobalt content. The total conductivity increased with the increase of the content of the diamond and the temperature , But for samples with more diamond content, the conductivity shows a maximum at a narrow temperature range around ~ 900 ° C. This article explores the possible causes of this phenomenon.