Objective To explore the change of peripheral benzodiazepine receptors (PBR) expression in the telencephalon of mice with schistosomiasis. Methods The changes of PBR mRNA in the telencephalon of schistosomiasis mice were observed by the real-time FQ-PCR method. The results were judged with circle number of times (C_T) when the level of amplification exponent achieved detecting liminal value. Results Comparing the experiment group (n=10) with the healthy control (n=10) at the 8th、12th、20th week, the changes of C_T were significant(P