以免疫器官指数、迟发性超敏反应、溶血素量和腹腔巨噬细胞吞噬率为指标，以矿源黄腐酸为对照，对生化黄腐酸对动物免疫系统的影响作了初步研究。结果表明：生化黄腐酸在免疫过程中各阶段均有促进作用，且剂量适合时作用极显著；而矿源黄腐酸则随试验条件不同分别表现为促进或抑制作用，二者之间有较明显的差异。 The immune organ index, delayed hypersensitivity, hemolysin and phagocytic rate of peritoneal macrophages were used as indexes, and the effect of bioferric acid on animal immune system was studied by using fulvic acid as control. The results showed that biochemical fulvic acid had a promoting effect in all stages of the immune process, and the effect was very significant when the dosage was suitable. However, the fulvic acid in the mineral source was promoted or inhibited by the different test conditions, Significant differences.